ratchetingn.棘轮效应动词ratchet的现在分词.
ratchetn.棘轮;棘齿v.(使)渐进=rachet.
ratchet feed mechanism棘轮进给机构
ratchet handle spanner棘轮单头扳手
ratchet type roll feed棘轮式滚轴送料
ratchet type grease cup棘轮式注油杯
ratchet blocking system棘轮闭锁装置
ratchet-effect theory棘轮效应理论
ratchet wrench extension手摇螺丝扳手接长 节