一个轮胎有一顶王冠，其中包括一个面向层的圆周，螺旋缠绕加固线程。

A tire having a crown which includes a ply of circumferentially oriented, helically wound reinforcing threads.

youdao

一个轮胎有一顶王冠，其中包括一个面向层的圆周，螺旋缠绕加固线程。

A tire having a crown which includes a ply of circumferentially oriented, helically wound reinforcing threads.

youdao