strengthener 

英汉解释

n. 助力器

同义词

n. reinforcement

参考例句

1. This pose is a powerful arm and wrist strengthener and might also be called the One-Arm Balance.
这个体式可以强健手臂和手腕，也被称作单手平衡。
2. This paper studied sweet smell composition. Have a experiment and comparator on adding yeast during fermentation period and adding yeast special flavour strengthener.
本文就酱油的香气成份进行了试验研究。在发酵过程中添加酵母和在成品酱油中添加酵母风味强化剂进行了试验研究和比较。
3. According to the technical condition and testing approach of vacuum strengthener with brake master cylinder, the test equipment and the control system for the performance were designed.
提出了汽车真空助力器—制动主缸总成的综合性能测试项目，采用机电气液一体化的原理方法，研制出了总成综合性能测试系统，详细论述了测试系统各组成部分。

英英解释

n.
  1. a device designed to provide additional strength

网络释义

strengthener
助力器; 增强力量的训练方法;
Nail strengthener
指甲强化剂;
Uncoiler and strengthener
整平机;
NATURAL NAIL STRENGTHENER
加钙护理底油;
strong pastel diamong nail strengthener
美宝莲纽约色彩前线甲油;