The law of variable mass motion of a soft rope is studied.
研究了一种变质量柔绳上升和下降的运动规律。
Thus large translation of atoms mass center motion is realized.
从而可实现较大的原子质心动量交换。
The motion of variable mass system under variable force is studied using air track.
在气垫导轨上研究了变质量物体在变力作用下的运动规律。
It is essential to put the entire body mass in motion behind long-range strikes.
把整个体重应用在远距离打击是必不可少的。
It is essential to put the entire body mass in motion behind long-range strikes.
把整个体重应用在远距离打击是必不可少的。
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