ratchet wheel screw的意思|示意
美 / ˈrætʃit hwi:l skru: /
英 / ˈrætʃɪt hwil skru /
大钢轮螺钉
ratchet wheel screw相关例句
A ratchet wheel with a handle is sheathed on the core bar, and a screw can be easily screwed down or unscrewed by both hands.
在芯杆上套上一个带有扳把的棘轮，双手并用，就可以较轻松地拧紧或卸下螺丝。