1. 助力器：助理牧师curatelector | 助力器strengthener | 助力刹车servobrake
2. 增强力量的训练方法：负重训练 weight training | 增强力量的训练方法 strengthener | 诱导训练 motivative training
3. 强化剂、增强剂：street car rail电车轨 | strengthener强化剂、增强剂 | strength to rigidity ratio强度-刚度比
noun
1. a device designed to provide additional strength
e.g. the cardboard backing was just a strengthener
he used gummed reinforcements to hold the page in his notebook
Synonym: reinforcement