列车对轨道的动力作用
dynamic interaction between train and track
任意确定性动力作用
arbitrary deterministic dynamic loading
土的动力性质
dynamic properties of soils
关闭井口套管闸门形成的挤压压力
bradenhead squeeze pressure
光合作用的作用光谱
action spectrum of photosy nthesis
壁面脉动压力
wall pressure fluctuation
wall pressure fluctuations
壁面压力脉动
wall pressure fluctuation
点脉动压力
a point fluctuating pressure
动脉压力波形分析
arterial pressure waveform analysis