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心电图(ECG)文集

ECG是electrocardiogram的缩写,意思是心电图,指心脏在每个心动周期中,由起搏点、心房、心室相继兴奋,伴随着生物电的变化,通过心电描记器从体表引出多种形式的电位变化的图形。

本文集包含了大量ECG相关资料,包含心电图基础、和心电图相关算法源码,其中包含几篇英文论文非常值得一看。希望对从事相关领域的网友有些帮助。

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心电图(ECG)文集 文档列表

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心电模拟滤波程序心 电模拟滤波程序
标签:心电模拟滤波程序心电模拟滤波程序
积分:1 类型:应用文档上传者:crazyjackson上传时间:2014-03-05
简介:心电模拟滤波程序心 电模拟滤波程序
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包含心电数据的差分、小波、巴特沃思滤波器等滤波方法。
标签:包含心电数据差分小波
积分:1 类型:应用文档上传者:jujuyaya222上传时间:2014-03-05
简介:包含心电数据的差分、小波、巴特沃思滤波器等滤波方法。
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本程序是基于心电信号的呼吸率检测算法
标签:本程序是基于心电信号的呼吸率检测算法
积分:1 类型:应用文档上传者:csdn_can上传时间:2014-03-05
简介:本程序是基于心电信号的呼吸率检测算法,是监护仪生理信号检测的一个重要算法。本程序在ARM7、9的一直都可以用。
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12-Lead ECG Data Acquisition System Based on ADS1298
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介: A 12-lead ECG data acquisition system based on ADS1298 is presented in this paper. ADS1298 is a latest 16-channel 24-bit Analog to Digital Converter (ADC) made in TI Company, which has the characters of high-precision,low power and low noise, with the internal integration of the input multiplexers, analog low-pass filter, and digitalfilter, etc. Combined with the high-speed low-power chip M051 as MCU, it can achieve the standard 12-leadsimultaneous ECG acquisition. ECG data can also be transmitted to an upper host PC though nRF24LE1 MCU. Thissystem greatly compact the circuit and reduce the power cost, as well as implement the wireless transmission. It haslaid the foundation for the future high-accuracy portable ECG instrument.
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A portable ECG for recording and flexible development of algorithms and stress detection
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介: Cardiovascular diseases are directly or indirectly responsible for up to 38.5% of all deaths in Germany and thus represent the mostfrequent cause of death. At present, heart diseases are mainly discovered by chance during routine visits to the doctor or whenacute symptoms occur. However, there is no practical method to proactively detect diseases or abnormalities of the heart in thedaily environment and to take preventive measures for the person concerned. Long-term ECG devices, as currently used byphysicians, are simply too expensive, impractical, and not widely available for everyday use. This work aims to develop an ECGdevice suitable for everyday use that can be worn directly on the body. For this purpose, an already existing hardware platform willbe analyzed, and the corresponding potential for improvement will be identified. A precise picture of the existing data quality isobtained by metrological examination, and corresponding requirements are defined. Based on these identified optimizationpotentials, a new ECG device is developed. The revised ECG device is characterized by a high integration density and combinesall components directly on one board except the battery and the ECG electrodes. The compact design allows the device to beattached directly to the chest. An integrated microcontroller allows digital signal processing without the need for an additionalcomputer. Central features of the evaluation are a peak detection for detecting R-peaks and a calculation of the current heart ratebased on the RR interval. To ensure the validity of the detected R-peaks, a model of the anatomical conditions is used. Thus,unrealistic RR-intervals can be excluded. The wireless interface allows continuous transmission of the calculated heart rate. Following the development of hardware and software, the results are verified, and appropriate conclusions about the data qualityare drawn. As a result, a very compact and wearable ECG device with different wireless technologies, data storage, and evaluationof RR intervals was developed. Some tests yelled runtimes up to 24 hours with wireless Lan activated and streaming.
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A_2.89_uW_Dry-Electrode_Enabled_Clockless_Wireless_ECG_SoC_for_Wearable_Applications
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介: This paper presents a fully integrated wirelesselectrocardiogram (ECG) SoC implemented in asynchronousarchitecture, which does not require system clock as well asoff-chip antenna. Several low power techniques are proposedto minimize power consumption. At the system level, a newlyintroduced event-driven system architecture facilitates the asynchronous implementation, thus removes the system clock leadingto a true ECG-on-chip solution. A DC-coupled analog front-endis introduced together with a baseline stabilizer to boost the inputimpedance to 3.6 G and mitigate the electrode offset, which isless sensitive to motion artefact and contact impedance imbalance, making it well suited for dry-electrode based applications. Level-crossing analog-to-digital converter (LC-ADC) is employedto take the advantage of burst nature of ECG signal leading to atleast 5 times reduction in sampling points compared to Nyquistsampling. A digitally implemented impulse-radio ultra-widebandtransmitter is seamlessly integrated with LC-ADC and an on-chipantenna for wireless communications. Implemented in 0.13 μmCMOS technology, the ECG-on-chip consumes 2.89 μW under1.2 V supply while transmitting the raw ECG data, which attainsone order of magnitude lower than the current state-of-the-artdesigns. The fully integrated ECG SoC requires no externalclocks and off-chip antenna, making it a good candidate for lowcost and disposable wireless ECG patches, such as epidermalelectronics. Index Terms— Electrocardiogram (ECG), dry-electrode, highinput impedance IA, DC-coupled IA, event-driven, level-crossingADC, asynchronous, clockless, impulse-radio, wearable biomedical sensor, epidermal electronics.
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Accurate Level-crossing ADC Design for Biomedical Acquisition
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介: The aim of this paper is to present a wireless biomedical system for the acquisition and transmission(Wibio’ACT) of biomedical signals. This work is a part of the Wibio’ACT project which main purpose is toensure the minimum power consumption while diagnose patients continuously and in real time. For theWibio’ACT system, the bottleneck is the analog-to-digital conversion (ADC) since it controls the powerconsumption of the digital signal processing step as well as the amount of the transmitted data. In fact, inthis work case, the ADC continuously measures the electrical activity of the heart to deliver theelectrocardiogram (ECG) signal. Hence, among conventional ADCs, level-crossing analog-to-digitalconverters (LC-ADCs) have been investigated for ECG signals processing. Authors propose some designconsideration of the LC-ADC. This reduces the LC-ADC output samples by 13 % to help to save the powerconsumption of the wireless data transmitter. The samples with a small variation are reduced by at least44%. The performance of the proposed design is measured in terms of percentage root mean squaredifference (PRD) applied to the reconstructed signal quality. A PRD of 1% is verified using behavioralsimulations on ECG records extracted from different databases. A timer period TC of 0.14 ms ensures aneffective number of bits of 10 bits and a signal to noise ratio of 62 dB.
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Analog Front-End Design for ECG Systems Using Delta-Sigma ADCs
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介:This document discusses the characteristics of electrocardiogram (ECG) signals and different front-endapproaches for ECG signal acquisition. The tradeoffs between different approaches and the effects onoverall system design are discussed. The report also includes descriptions of potential implementations ofthe front-end architecture using the ADS1258 and ADS1278 and respective noise measurement results.
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Asynchronous Adaptive Threshold Level Crossing ADC for Wearable
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介: The level crossing ADC generates digitized samples consisting of the magnitude of input signal and time interval between twoconsecutive level crossings when the input signal crosses the threshold level. This paper presents a new architecture of low powerasynchronous adaptive threshold level crossing (LC) ADC suitable for wearable ECG sensors based on a novel algorithm fordetermining adaptive threshold. The adaptive threshold was determined by calculating the mean of maximum and minimumvalues of signal in a predetermined window. Polynomial interpolation was used to reconstruct the signal. A signal to noisedistortion ratio of 57.50 dB and a mean square error (MSE) measure of 1.368*10?8 V2 was achieved by the proposed algorithmfor a 1 mV, 10 Hz input sinusoidal signal in MATLAB. The asynchronous adaptive threshold LC ADC operating from a supplyvoltage of 0.8 V occupied a layout area of 266.33*331.385 μm2 when implemented in CADENCE virtuoso using 180 nmtechnology. The designed circuit consumes an average power of 367.6 nW for a 1mVpp, 10 Hz input sinusoidal signal whensimulated in Virtuoso.
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Coping with Motion Artifacts by Analog Front-End
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介:The development of portable ECG technology has found growing markets, from wearableECG sensors to ambulatory ECG recorders, encountering challenges of moderately complex totightly regulated devices. This study investigated how a typical 0.5–40 Hz bandwidth ECG isaffected by motion artifact when using analog front-end (AFE) integrated circuits such as theAD823X family. It is known that the typical amplitude resolution of current mobile health ECGdevices is 10–12 bits, and sometimes 16-bits, which is enough for monitoring but might beinsufficient to identify the small potential amplitudes useful in diagnoses. The interest now is onthe interplay of how a digital resolution choice and variable gain can cope with motion artifactsinherent in mobile health devices. With our methodology for a rapid prototyping of an ECG device,and using the AFE AD8232 and Bluetooth communication, a specific cardiac monitor ECGconfiguration was evaluated under two microcontroller systems of different resolution: a genericArduino Nano board which featured a 10-bit analog-to-digital converter (ADC) and the 24-bit ADCof Silicon Labs C8051F350 board. The ECG cardiac monitor setup, recommended by Analog Devices,featuring two gain values under these two different microcontroller systems, was explored as to itsability to solve motion artifact problems.
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Design of Portable ECG Device Based on STM32
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介:In accordance with the big size and bulky volume and not easy to carry of ECG monitoring equipment limitations , a new portable ECG collecting equipment of real-time monitoring andlow-cost was designed. Compared to the static ECG monitor , the new design has obviousadvantages easy to cassy and fit to real-time operate .The device can store 24-hour ECG data andtransfer data with PC through the interface of USB .The ECG waveforms can be displayed in theTFT-LCD real-time and show a good interactive interface .
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DESIGN OF SIGMA DELTA ADC FOR BIO SIGNAL (ECG) ACQUISTION
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介: In addition to compatibility with VLSI technology, sigma-delta convertersprovide high level of reliability and functionality and reduced chip cost. Those characteristics are commonly required in the today wirelesscommunication environment. The objective of this paper is to simulate andanalyze the sigma-delta technology which proposed for the implementationin the low-digital-bandwidth voice communication. The results ofsimulation show the superior performance of the converter compared to theperformance of more conventional implementations, such as the deltaconverters. Particularly, this paper is focused on simulation andcomparison betien sigma-delta and delta converters in terms of varyingsignal to noise ratio, distortion ratio and sampling structure. The SigmaDelta Modulator have a salient feature of shaping the noise, such thatnoise reduces from the band of interest resulting in high accuracy incomparison to other converters and high tolerance to non idealities ofanalog circuits. The significant advantage of the method is that conversionof analog signals can be performed by using only a 1-bit ADC and analogsignal processing circuits having a precision that is usually much less thanthe resolution of the overall converter. In this project i have done theanalysis on fifth and sixth order of sigma delta adc’s in regarding withSNR, Node Spectrum Analysis and Integrated Poir noise in MatlabSimulink. Introduction
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ECG interpretation
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介:Conduction Pathways • Systematic Interpretation • Common abnormalities in Critical Care – Supraventricular arrhythmias – Ventric lar arrh thmias Ventricular arrhythmias
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Electrocardiography and Introduction to Electrophysiologic Techniques
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介:The optimism of Sir Thomas Lewis and the cautions ofDr. Nadas regarding the electrocardiogram (ECG) remainvalid even in this day of sophisticated echocardiography,Doppler flow analysis, and magnetic resonance imaging. Although it must be admitted that fine details of cardiacanatomy are now best evaluated with these modern techniques, the ECG is not (and never will be) obsolete. It isstill the quickest, safest, and least expensive diagnostic toolin cardiology and is unparalleled in its ability to registerarrhythmias and conduction defects. With proper interpretation, the ECG also offers a useful reflection of cardiacposition, chamber enlargement, myocardial damage, andcertain metabolic disorders. It has clearly proven its worthafter more than a century of continuous clinical use. This chapter is intended as a review of electrocardiographyas it applies to the pediatric patient. Rather than simplycatalogue a litany of rules for ECG interpretation, we haveexpanded the discussion here to encompass the basic cellular events underlying cardiac electrical activity, along witha survey of invasive and noninvasive techniques used forin-depth analysis of cardiac rhythm and conduction patterns. This information is intended not only to clarify the originof ECG signals recorded from the body surface but also toserve as an introduction to the broader topic of cardiacarrhythmias that will be addressed further in Chapter 29 ofthis text.
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How to read an electrocardiogram (ECG). Part 1 Basic principles of the ECG. The
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介: The electrocardiogram (ECG) is one of the simplest and oldest cardiac investigations available, yet it canprovide a wealth of useful information and remains an essential part of the assessment of cardiac patients. With modern machines, surface ECGs are quick and easy to obtain at the bedside and are based on relativelysimple electrophysiological concepts. However junior doctors often find them difficult to interpret. This is the first in a series of articles that aim to:? Help readers understand and interpret ECG recordings. ? Reduce some of the anxiety juniors often experience when faced with an ECG.
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PALS_ECG_Basics
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介: Introduction Review ECG Basics to increase your knowledge of the electrocardiogram (ECG). In the PALS Provider Course you must be able to identify core rhythms during the case simulations and core case tests. Electrocardiogram Normal Cardiac Cycle The surface ECG is a graphic representation of the sequence of myocardial depolarization and repolarization. Each normal cardiac cycle (Figure 1) consists of a ? P wave ? QRS complex ? T wave Electrical depolarization begins in the sinoatrial node at the junction of the superior vena cava and right atrium and advances through atrial tissue to the atrioventricular (AV) node, where conduction velocity slows temporarily. It then progresses via the bundle of His and the Purkinje system to depolarize the ventricular myocardium (Figure 2). The first deflection on the surface ECG (P wave) represents depolarization of both atria. The time required for depolarization to pass through the atria, the AV node, and the His-Purkinje system is represented by the PR interval. The QRS complex represents depolarization of the ventricular myocardium. Ventricular repolarization is characterized on the surface ECG as the ST segment and T wave (Figure 3). Figure 1. The electrocardiogram
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singlechip-implementation-of-levelcrossing-adc-for-ecg-sampling-2332-0796-1000219
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介: This work demonstrates for the first time the implementation of a level-crossing analog-to-digital converter (LC-ADC)in a single, commercially available IC (that costs less than $2). The implementation utilizes adaptive threshold levelsin order to prevent overload distortions for fast-changing signals. The entire design is based on a 20-pin PIC16F1769microcontroller from Microchip and no external components are required. In fact, the only external circuitry required is asingle jumper wire. This is due to the fact that the new generation of microcontrollers have integrated core-independenthardware, analog as well as digital. This design takes full advantage of the core-independent logic and analog blocksin a PIC16F17xx circuit to implement the LC-ADC technique that so far has required multiple-circuit designs or ASICimplementation. The design is demonstrated on a standard electrocardiogram (ECG) signal.
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W-2-Sevigny-Basic ECG
标签:ECG心电图
积分:1 类型:应用文档上传者:太白金星上传时间:2021-06-30
简介:Identify the conduction system of the heart and the components of the cardiac cycleDiscuss a systematic approach to rhythm interpretationReview common cardiac arrhythmiasDescribe the process for interpretation of a 12 lead ECG
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基于LabVIEW的心电信号插值算法分析
标签:基于LabVIEW的心电信号插值算法分析
积分:1 类型:应用文档上传者:froglucky上传时间:2014-03-05
简介:为了在LabVIEW平台下更方便的处理非均匀采样的心电信号,文中研究了心电信号的时域和频域插值算法。首先采用了拉格朗日插值法、牛顿插值法、埃尔米特插值法和三次样条插值法等四种时域插值方法,从算法精度、内存消耗和时间消耗三个方面做比较,得出埃尔米特插值法最为合适。最后又提出一种频域插值法:补零傅里叶频域插值法,来弥补原始心电信号频域分辨率不足的缺点。
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心电检测系统及其FPGA实现
标签:心电检测FPGA
积分:1 类型:应用文档上传者:flexbuilder上传时间:2014-03-05
简介:心血管疾病是当今危害人类健康的主要疾病之一,心电图检查是临床上诊断心血管疾病的重要方法。心电图准确的自动分析与诊断对于心血管疾病的诊断起着关键的作用,也是国内外学者所热衷的研究课题。QRS复合波的检测是心电自动分析的关键环节,检出的位置精度关系到后续处理和分析的正确性和准确性。 本文在总结前人工作的基础上,对基于小波变换的QRS复合波检测算法做了深入研究;并针对小波变换算法与心电检测算法的结构提出了一种硬件实现方法。本文的主要内容包括基于小波变换的心电信号检测算法设计和该算法在FPGA系统上的实现两个部分。 对国内外近年内发展起来的各种心电检测方法进行了总结,并综合考虑检出率和硬件实现的实时性等问题,采用小波变换方法对QRS复合波进行检测。根据QRs复合波经小波变换后,心电特征波在某些尺度上对应有相对明显的模极值对,通过在对应尺度上判断模极值对,进而检测出对应的特征波。 设计了基于小波变换的心电信号检测算法的FPGA实现系统。系统主要包含三个模块:心电信号预处理模块、小波分解模块和检测模块。心电信号预处理模块对输入的心电信号进行滤波预处理,以消除工频干扰和基线漂移。小波分解模块采用流水线设计,即把各层小波分解分成各个模块独立实现,以提高运算效率。检测模块的功能是利用小波分解模块的输出结果在各尺度上寻找模极值对,并根据检测策略检测QRS复合波。 本文采用Veillog语言对设计进行了仿真验证,并通过MIT-BIH心律失常标准数据库对本文的设计实现进行性能评估,获得了较好的检出率。同时,综合结果也表明系统时钟能够工作在较高的频率,足以满足高速实时对心电信号的处理与检测。
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比较了PCA和ICA在心电提取方面的性能
标签:比较了PCA和ICA在心电提取方面的性能
积分:1 类型:应用文档上传者:lamaba上传时间:2014-03-05
简介:比较了PCA和ICA在心电提取方面的性能
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心电图基础知识
标签:心电图
积分:1 类型:教程及课件上传者:niuniu2014上传时间:2014-03-11
简介:心电图ECG的基础知识
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基于低功耗蓝牙的心电监护系统的设计与实现
标签:心电监护低功耗蓝牙移动医疗
积分:2 类型:学术论文上传者:平凡一人上传时间:2017-02-12
简介:本文基于目前最新的低功耗蓝牙技术和智能手机iOS平台,设计实现了一套心电信号获取、传输、实时显示、实时分析,记录和报警为一体的移动心电监护系统,详述了软硬件功能模块的设计。
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可穿戴式心电、呼吸传感器与检测系统的研制
标签:可穿戴设备
积分:1 类型:应用文档上传者:froglucky上传时间:2018-03-25
简介: 可穿戴式心电、呼吸传感器与检测系统的研制
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12导联心电图P波检测算法.pdf
标签:12导联心电图P波检测
积分:2 类型:工具软件上传者:citizennju上传时间:2019-04-04
简介:适用于嵌入式心电监测与监护系统中的核心算法
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基于ZigBee的无线ECG心电采集诊断系统.rar
标签:国赛
积分:0 类型:应用文档上传者:mamselc上传时间:2019-05-20
简介:国赛获奖作品:基于ZigBee的无线ECG心电采集诊断系统
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基于GD32F350的单导联心电采集系统
标签:GD32国产芯片
积分:1 类型:应用文档上传者:高进上传时间:2020-06-19
简介:简介:传统心电监测常见有常规心电图检测、监护心电图检测和动态心电图检测。为了更加便捷高效地监测人体的心律特征,设计了一种基于GD32F350的单导联心电采集系统。该系统采用单导联的方式获取心电信号,只需将导联电极片安装于使用者手上,即可随时随地查看自己的心电图,无需前往医院专门检查自己的心脏健康情况。系统采用蓝牙的传输方式,将心电信号通过蓝牙实时上传至手机APP端,APP端集成心电信号的滤波算法,实时绘制使用者的心电图,同时,在测量结束后,给出测量报告。该系统不但解决了传统心电监测设备不方便的问题,还可以为使用者提供心电分析报告及心电图,为进一步医生确诊提供详细的参考依据。 作者:EEWorld社区网友Justice_Gao 原文链接:http://bbs.eeworld.com.cn/thread-1054894-1-1.html
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专业组_仪器仪表类_兰州大学_基于MSP430的心电监控系统
标签:源码
积分:1 类型:源码上传者:太白金星上传时间:2021-02-23
简介:电赛源码 专业组_仪器仪表类_兰州大学_基于MSP430的心电监控系统.rar
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简易心电图仪
标签:心电图仪
积分:1 类型:应用文档上传者:sigma上传时间:2021-03-11
简介:简易心电图仪简易心电图仪简易心电图仪

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