内排屑精密深孔钻
precision deep hole drill with inside chip removal
精密深孔钻孔工具
precision deep hole drilling tool
高压内排屑
Inner disposal of chips under high pressure
孔内深层强夯
Down-hole Dynamic Compaction
孔内深层强夯法
Deep Dynamic Compaction inside Pile Hole
孔内深层强夯法(DDC)
down-hole deep compaction(DDC
孔内深层强夯桩
down hole dynamic compaction
冲击式深孔钻机
long-hole percussive machine
多轴深孔钻床
multi-spindle deep hole drilling machine