Renew brake rim because of excessive wear.

更换磨损严重的刹车鼓。

The rim, spoke and the brake hub are cast into a whole; the spoke takes a shape of an arc on the whole.

所述的轮辋、辐条及刹车毂铸造成一个整体，所述辐条整体呈弧形。

The principle and method for testing brake character, travelling speed, break out force and rim pull are described.

并论述了制动性能、车速、掘起力、牵引力试验台的检测原理和方法。