黄壁庄水库副坝防渗心墙加固工程所需高性能混凝土，要求和易性好、早期强度低、后期强度高、抗渗性能好、低弹模和高抗拉强度。
The high performance concrete for core wall of earth dam must be good workability, low early strength, high final strength, high seepage resistance, low elasticity modulus and high tensile strength.
本文讨论计算机控制的多导心电隔离测量系统共模抑制性能设计的理论和实际问题。
This paper deals with theoretical and practical problems concerning the design of the common mode rejection performance in the isolated computer-controlled multichannel ECG systems.
基于小波变换的各个尺度上模极大值，本文深入研究了异常心电信号尤其是梗死发生时S - T段的检测。
Based on the modulus maxima at each scale of wavelet transform, this paper does a research into the detection of S-T segment of abnormal ECG, especially that of myocardial infarction.
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