名词
中文翻译：瞬间臂
同义词：
['moment arm', 'momentary arm例句：1. The moment arm of the lever is its shortest part.（杠杆的瞬时臂是其最短的部分。）']
例句：
-
1. The moment arm of the lever is its shortest part.
杠杆的瞬时臂是其最短的部分。
-
2.The moment arm of a pendulum swings from the fulcrum to the pivot point.
摆钟的瞬时臂从支点到轴心摆动。
-
3. The moment arm of a force is the distance from the point of application to the point of reaction.
力的瞬时臂是从作用点到反作用点的位移。