无尖齿切槽刀
slotting cutter without sharp teeth
人字形切槽巴西圆盘试样
cracked chevron notched brazilian disc CCNBD
人字形切槽巴西圆盘CCNBD
cracked chevron notched brazilian disc CCNBD
曲面切槽晶体
Channel cut-curved crystal
切槽切断
Grooving and Disconnection
切槽爆破
notched blasting
notching blasting
notching blast
grooved hole-well blasting
cut blasting
V-notch blasting