通过力的作用点沿力的方向所画的直线叫力的作用线,通过动力的作用点沿动力的方向所画的直线叫动力作用线,通过阻力的作用点沿阻力的方向所画的直线叫阻力作用线。在讨论机械、功、力时常作为一个考虑因素。
三个力的作用线相互平行的例外情况,我们将在第三章讨论。
There is an exceptional case, three forces with paralleled lines of action, which will be discussed in Chapter 3.
机器运转时,工作人员不能站立在惯性力作用线的范围内,电器开关的安装也要避免这个位置。
When the machine working, workers should stand around inertia power process line, the installation of wiring should also avoid this place.
在系统中提出以虚拟手指空间位姿代替实际力作用线方向上位移的计算和基于实际材料的虚拟力外推的方法。
Using virtual finger's position steading of real distance and extrapolation based on real material are also suggested in the system.
All right. The other thing I have to teach you is matter-energy interaction so that we can see how the Balmer series validates the Bohr model.
好的,我要教你们的里一个知识点是,物质能量的相互作用,我们可以见证,巴尔末线系是怎样证实波尔模型的。
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