initial cut

• 切槽

initial cut的用法和样例：

例句

1. If grooves are cut in the flank of nut hydrostatic action is possible.
   如在螺母螺纹侧面切槽，则可实现静压作用。
2. 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。
3. 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。