bar force meaning in English

杆力

It is possible to determine all the bar forces by the application of the principles of statics alone .
只要利用静力学原理就能求出各杆的内力。
it will simplify the arithmetic if we choose one bar force as zero, say =0.
如果选择其中有一根杆的轴力为零，就简化计算，比如0。
An internal work product will occur when a bar force , n . is associated with a change of length , e
当杆件内力n和长度的变化e相结合时就得到内乘积功。
Operations guide : keyboard control ! key figures in the direction of running control , the space bar forced to make head movements
操作指南：键盘控制,方向键控制人物跑动,空格键用力做出顶球动作