bottom gate

[ˈbɔtəm ɡeit]
  • 释义
  • 底部闸门;底浇口;底孔闸门;底注式浇口;

  • 双语例句
  • 1、

    Adopting advancing mining which is non - advance bottom gate and raserve gate along the gob.

    这是单一突出煤层开采的新途径新工艺.

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