It has been a trend to adopt the comprehensive maintenance "window" by using large maintenance machinery.

采用大型养路机械开设综合维修天窗已成为铁路设备养护维修作业的主要发展趋势。

youdao

It has been a trend to adopt the comprehensive maintenance "window" by using large maintenance machinery.

采用大型养路机械开设综合维修天窗已成为铁路设备养护维修作业的主要发展趋势。

youdao