打眼 掏槽落煤法

holing  detail>>

掏槽落煤法

holing thirling  detail>>

风镐落煤法

pneumatic pick mining  detail>>

空眼掏槽

burn cut burn-cut  detail>>

直眼掏槽

cylinder cut parallel cut  detail>>

直眼掏槽爆破

parallel cut blasting  detail>>

平行空炮眼掏槽

burn cut michigan cut  detail>>

平行空炮眼掏槽法

bur cut michigan cut michigancut  detail>>

平行切割 直眼掏槽

parallelcut  detail>>

落煤

break down  detail>>

打眼

1.(钻孔) punch [bore] a hole; drill; trepanning; boring blastholes; drilling  短语和例子  &n...  detail>>

掏槽

[矿物学] cutting [采矿工程] undermine; underholing  detail>>

落煤槽

coal conduit  detail>>

落煤管

coal shoot  detail>>

自落煤

bumpy coal  detail>>

煤法肺

pneumoconiosis of coal workers  detail>>

炮眼掏壶

chambering  detail>>

打眼锤

drilling hammer  detail>>