结果表明：截面高度对径向振动频率有显著影响，但是对切向振动频率影响很小；
The results showed that the radial frequency was greatly affected by the height of the cross-section, but the tangential frequency wasn't.
笔者提出了沿垂直方向、水平径向和水平切向振动时不同距离地震波衰减规律的经验公式。
An empirical formula was derived, which indicated the attenuation of the seismic waves at different distances along the vertical, horizontal and horizontal tangential directions.
那么单摆在振动过程中，切向力、法向力及合力的大小和方向是否在变化?。
Do the tangential force, the mormal force, the resultant force and their directions during oscillation of a simple pendulum change?
将水轮发电机组系统的振动问题分解为轴向振动、径向弯曲振动及切向扭转振动进行研究。
The vibration of axial, radial bend and tangent torsion direction on water turbine-generator unit is discussed.
交替切向进水和膜分离器底部曝气可增大膜束振动频率，提高膜抗污染能力。
Vibration frequency of membrane can be increased, and ability of resisting contamination can be improved by alternate tangent in-flow and bottom aeration in R-MBR apparatus.
分析表明：切向超声振动辅助磨削可以得到更短的切屑，更长的切削路径长度。
It is shown that the cutting chips are shorter and the cutting route is longer in ultrasonic vibration assisted grinding along tangential direction than that in conventional grinding.
分析表明：切向超声振动辅助磨削可以得到更短的切屑，更长的切削路径长度。
It is shown that the cutting chips are shorter and the cutting route is longer in ultrasonic vibration assisted grinding along tangential direction than that in conventional grinding.
应用推荐