“掏槽”造句

近几年来,又再度使用了裂缝掏槽.
During recent years the seam cut has once again come into use.

掏槽方式及布孔参数影响着掘进效率和成本.
The cut way and hole parameters affect the drivage efficiency and cost.

严重突出煤层掘进水力掏槽防突措施在国际上是一种防突新技术.
Grave protrusion coal seam tunnelling hydraulic cutting protrusion - dispelling measures is a new technology in the world.

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