pendulum bob
英
美
- bob v.上下疾动;剪短;行屈膝礼;欺骗;窃取n.上下快速摆动;短发,波波头;钟摆;浮子;屈膝礼;一束;先令;大雪橇;鲍勃(人名)
- pendulum n.摆锤;钟摆;摇摆不定
- The hydrometric pendulum is sometimes used to determine flow velocities in open channels.
测流速的摆锤有时用于确定明渠中的流速。
- Huygens saw that a pendulum traversing a circular arc completed small oscillations faster than large ones.
惠更斯观察到,若摆锤沿著圆弧摆荡,那麽摆动幅度小的时候会比幅度大时振荡得快。