设置安全阀可使得在轮胎压力达到设定值时，筒体形成空载。

The arrangement of the safety valve makes the barrel body form zero load when the tyre pressure reaches the set value.

youdao

设置安全阀可使得在轮胎压力达到设定值时，筒体形成空载。

The arrangement of the safety valve makes the barrel body form zero load when the tyre pressure reaches the set value.

youdao