C70 type freight car is a main kind of operational freight car in China.

C70货车是中国的主型铁路货车，其轮—轴失效关系到铁路运输安全。

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C70 type freight car is a main kind of operational freight car in China.

C70货车是中国的主型铁路货车，其轮—轴失效关系到铁路运输安全。

youdao