detent
n. 制动器
近义词：click，dog，pawl，
英英释义
Noun
- a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward
例句
用作名词(n.)
- A detent is one notch of the mouse wheel.制动器是鼠标轮的一个凹口。