The negative electrostatic spring effect of feedback force generator is analyzed in focus, and its linear mathematics module is calculated out.
重点分析了其力矩反馈器的电刚度效应并给出其线性数学模型表示式。
Analysis is conducted for the variation of cutting force during the cutting process and the effect of negative shearing on the cutter damage is pointed out.
分析了切削过程中切削力的变化情况，并指出负剪切现象对刀具破损的影响。
The sum of work of effect and reaction has nothing to do with the choice of criterion. With this conclusion, it is very easy to work out the sum of particle and work of internal force.
利用作用力做功和反作用力做功的代数和与参照系的选择无关这样的结论，计算质点组的内力作功之和将非常简捷方便。
Therefore, the needle-nail objects can be drawn out without too large force, plays a time-saving and labor-saving effect, and improves the security of the operation.
因此，不需要太大力即可以将针钉物拔出，起到了省时、省力的效果，并且提高了操作的安全性。
Take the pipe as an isolator, under the effect of the external load and the mid-plane gravitation mentioned above, the displacement, the internal force and the internal moment can be worked out.
将管道作为隔离体，在外载荷及前述中面应力的影响下，求位移、内力、内力矩。
Take the pipe as an isolator, under the effect of the external load and the mid-plane gravitation mentioned above, the displacement, the internal force and the internal moment can be worked out.
将管道作为隔离体，在外载荷及前述中面应力的影响下，求位移、内力、内力矩。
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