boring是什么意思

网络释义

1)boring,鑽探,鑽孔2)borehole (boring),鑽孔3)borer,鑽孔,鑽機,鑽頭4)Preboring,預先鑽探5)Rock drilling,岩層鑽孔6)calyx drill holes,萼狀鑽孔