短語詞組短語working slope face 工作邊幫面working tooth face 工作齒面working -face 澆筑倉面non -working slope face 非工作邊幫面caving -working-face 炮采放頂煤working face pressure 工作面礦壓chamber mining working face 房式采煤工作面division working face 分層工作面 返回 working face