| 释义 |
胀闸zhàngzhá自行车制动装置的一种,由两个半圆形的圈和弹簧构成,装在车轴轴套的内部,使用时半圆形的圈撑开,与轴套摩擦,起制动作用。{damper brake; hub brake; control device on a bicycle, formed with two semicircles and a spring and fixed on the inside of the axle sleeve. When in action the semicircles stretch to rub the axle sleeve to enable control and braking.} |