汽车轮胎的子午线是我国轮胎工业产品升级换代的方向。

Produced and use of radial tires to replace other tires is the development direction of the industry in our country.

youdao

汽车轮胎的子午线是我国轮胎工业产品升级换代的方向。

Produced and use of radial tires to replace other tires is the development direction of the industry in our country.

youdao