R wave has characteristic dispersion in layered media.
在层状介质中，瑞雷波具有频散特性。
R wave velocity is mostly relative to the nature of media in which wave can penetrate.
瑞雷波波速主要与其穿透深度范围内的介质物理性质有关。
Objective To estimate clinical significance of poor R wave progression in precordial leads.
目的探讨胸导联R波递增不良的临床意义。
The variation of R wave amplitude has little relation with cardiac output, heart pumping function, especially with pulmonary wedge pressure.
波振幅的改变与心输出量及心脏的泵血功能，尤其是肺动脉楔压之间无明显关系。
Results R(r) wave amplitude with the right forehead as the reference point was significantly larger than that with the central terminal as the reference point (P<0.05).
结果以右前额为参比点记录的心电图R（r）波振幅比以中心电端为参比点的心电图R（r）波振幅大，具显著性差异（P<0.05）。
The ground vibration by demolishing building mostly spreads with S-wave, P-wave, R-wave.
爆破拆除塌落触地产生触地震动，主要以S波、P波和R波三种地震波的形式向外传播。
The effective range of P-wave, S-wave, R-wave could be analyzed from the contours of dynamic stress.
从动应力等值线图上也可分析出强夯作用时压缩波、剪切波、瑞利波的作用范围。
The frequency range of R-wave has been determined by use of frequency analysis.
并且根据频谱分析的方法确定了瑞利波的频率分布范围。
This research is mainly composed of two parts: one is the electrocardiosignal collection system composed of hardware circuit while the other is the R-wave synchronized detection.
本研究主要包括应用硬件电路构成的心电信号的采集系统和R波同步检测。
This research is mainly composed of two parts: one is the electrocardiosignal collection system composed of hardware circuit while the other is the R-wave synchronized detection.
本研究主要包括应用硬件电路构成的心电信号的采集系统和R波同步检测。
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