tightener meaning in English

紧带轮
紧轮，紧线器
扭紧器，紧线器
收紧器
松紧器
张紧板
张紧轮紧线器紧固物
张紧皮带轮
张紧器

The drive poly - v belts with mechanical tightener are designed for a useful life of 15 - 20 , 000 operating hours
V型皮带传动，带有机械张紧装置，皮带正常使用寿命达15000 - 20000小时。
Fixed railway installations . equipment for overhead telecommunication and signalling lines . stay - tightener with standard eye
铁路固定设备.通讯和信号装置架空线路用器材.带标准孔的固定拉紧器
After years of experimenting , lavender skin tightener , an essence made by 5 natural plants is out on shelf
历经数年研究和不断实验，由五种全天然植物精心调配而成的薰衣草紧肤露正式推向市场。
Fixed railway installations . equipment for overhead telecommunication and signalling lines . stay tightener with reinforced eye
铁路固定设备.通讯和信号装置架空线路用器材.带加强孔的固定拉紧器