Terms containing dull bit

Subject	English	Chinese
dril.	bit dull grading	钻头磨损分级
dril.	dull bit	磨钝的钻头
oil	dull bit	旧钻头
oil	dull bit	钝钻头
archit.	dull bit	钝钻头杆头
oil	dull bit	磨钝钻头
tech.	dull bit	钝钎头
oil	dull bit analysis	钝钻头分析
tech.	dull bit evaluation	钝钎头评定
tech.	dull bit evaluation	钝钻头评定
dril.	dull bit grading	钝钻头分级
oil	dull bit grading system	钝钻头分级制
oil	dull bit indicator	钻头磨损指示器
dril.	dull bit indicator	顿钻头测示器
dril.	dull condition of the bit	钻头磨损情况