category of direct roof

 
  • 直接頂分類

category of direct roof的用法和樣例:

例句

  1. According to the studying and acquainting with the direct roof control of Datong mining area,this paper offers a kind of simple and workable classification for direct roofs.
    根據作者對大同礦區直接頂板控制的研究和了解,提出了一種簡單易行的直接頂分類方法。

category of direct roof的相關資料:

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