advance workings

英 [ədˈvɑːns ˈwɜːkɪŋz] 美 [ədˈvæns ˈwɜrkɪŋz]

网络  超前工祖

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双语例句

  1. Advance workings Idea on combined coal mining technology with multi coal shearers for longwall coal mining face
    长壁前进式全面开采法;超前巷道;前进式开采面长壁工作面多采煤机联合采煤工艺的构想