mine timbering

基本解释井支架

网络释义

1)mine timbering,井支架2)supporting well-frame,支承井架3)derrick leg,井架支腿4)cribbing,井框支架5)pit barring,矿井支架6)shaft set,井筒支架

单词索引：: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

短语索引：: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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