1)M.E.,主作用力2)main force method,主作用力法3)action,作用主动力作用量4)force,力，作用力5)effort,作用力作用6)action,作用;作用力
用法例句
Based on the applying research of the theory of modal force method, a kindof assembly method, the main force method is put forward, Several examples arepresented which nearly represent all the normal linkage means of substructures.
