For any machine whose input force and output force are known, its mechanicaladvantage and be calculated.
如何机器，若已知其输入力和输出力，则可以求出其机械效益。
For any machine whose input force and output force are known, its advantage can be calculated.
任何机器，若已知其输入力和输出力，则可求出其机械效益。
For any machine whose input force and output force are known, its mechanical advantage can be calculated.
如果机器的输入和输出功率已知，他的机械效率就可以计算。
With the two-steps force amplifier, we can not only make the output force and input force in the same direction, but also can amplify the input force efficiently with compact structure.
利用钢球一双锥面二次增力机构，不仅能实现力的同向输入输出，而且可在结构紧凑的前提下，对输入力进行高倍放大后输出。
Constant-force-output mechanisms produce a constant output force for a range of input displacements.
定常力输出机构就是在一定的输入范围内输出一恒定力的机构。
Constant-force-output mechanisms produce a constant output force for a range of input displacements.
定常力输出机构就是在一定的输入范围内输出一恒定力的机构。
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