v-beltsCOCA²⁵⁴³³⁷⁺⁶ 基本例句 🌏各项V型皮带；三角带与多沟带；V带 To ensure an optimum life and safe operation of the V-belts, the belts must be pretensioned so that the belts do not deflect by more than 16 mm after30 min of operation. 为了保证皮带在一个安全的环境下长时间运行，必须给皮带一个预紧力，试车30分钟之后皮带的偏移量不会超过16mm。 hcbbs