冲击式钻头的英文

• carr bit
• chisel bit
• percussion bit
• shot bit

• 冲击:    lash; pound
• 式:    type; style
• 钻头:    boring crown; bore bit; dril ...
• 钻粒钻头 冲击式钻头 冲击钻:    shotbit
• 击式钻头:    chisel bit