tightener
n. [机] 紧线器；张紧装置
例句
It is fixed and tightened by a belt guide and a tightener.
金属带的安装是通过引导器和拉紧器来完成拉紧的。
Take care of the original pully belt ageiging, if so please change a new belt and check the belt tightener !
安装时请检查原厂皮带老化情况，有问题请及时更换以后在使用，请检查皮带松紧力是否合适。
The tightener is the use when the cargo transportation, the migration, shipping or the warehousing fixed function.
收紧器是使用在货物的运输、移动、装运或者仓储时固定功能。
