lifter cut

• 底板掏槽

lifter cut的用法和样例：

例句

1. During recent years the seam cut has once again come into use.
   近几年来，又再度使用了裂缝掏槽。
2. The cut way and hole parameters affect the drivage efficiency and cost.
   掏槽方式及布孔参数影响着掘进效率和成本。