strengthenern.助力器;坚固者
strengthenv.加强;变坚固
Strengthening-belt加强带
strengthening course补强层
Strengthened process强化工艺
strengthen operation加强操作
strengthening theory强化理论
Strengthening examine加强考核
strengthening methods加固方法
strengthen technology加固技术
Strengthening coating强化层
strengthen one's hand保护导线