the moment about A of the force exerted by the chain at B.怎么翻译?是求A的力矩还是B的力矩?
问题描述：
the moment about A of the force exerted by the chain at B.怎么翻译?是求A的力矩还是B的力矩?
答
A的力矩,A点的力是由B处的链条施加.
没前后语,只能翻成这样了.