?油孔钻头

... 深孔钻头 deep hole drill; deep-hole drill 油孔钻头 oil hole drill; oil-hole drill 中心孔钻头 start drill ...

?油孔钻

... oil-hole cover ==> 注油孔盖 oil-hole drill ==> 油孔钻,油孔钻头 oil-hole location marks ==> 油孔配置标记 ...