例句與造句

1. The summation of forces in this and that directions must be zero .
   在這個和那個方向上的合力必定為零。
2. This tests your knowledge of the principles of vector addition and the summation of forces around a point
   這個測試你對向量加法原理及作用于同一點(diǎn)的外力總合的認(rèn)知。
3. The summation of forces on extensor mechanism should be zero according to equilibrium rules of forces before and after total knee arthroplasty based on constant extensor moment
   計(jì)算得到髕骨形位參數(shù)變化前后與伸膝機(jī)構(gòu)相關(guān)的動力學(xué)參數(shù)，包括股四頭肌力、髕韌帶力及髕股關(guān)節(jié)接觸壓力的變化。
4. It's difficult to find summation of forces in a sentence. 用summation of forces造句挺難的