false seam 中文意思是什麼
false seam
解釋
罐身鉤與罐蓋鉤未扣住-
The mining way of false slope flexible shield support in couverted seam
倒轉煤層偽斜柔性掩護支架採煤法 -
Application of false - inclined flexible shield mining system in coal face with seam pitch less than rest angle of waste
偽斜柔性掩護支架採煤法在煤層傾角小於矸石安息角工作面的應用
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