total force短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 总力 And so the total force on the system is simply the total force external. 作用于系统的合力是,所有的外力。163 So, of course, there's actually three different calculations in one because you have to sum the x components to get the x components of a total force. 实际上，需要做三次计算,因为要把 x方向的力求和,从而得到 F的 x分量。163