概述了中国铁路机车车辆车轮、车轴和轴承的基本情况。

The wheels, axles and bearings of locomotives and rolling stock in China Railway are generally described.

youdao

概述了中国铁路机车车辆车轮、车轴和轴承的基本情况。

The wheels, axles and bearings of locomotives and rolling stock in China Railway are generally described.

youdao