A.MPB B.MHP C.HPB D.MXP
A.MPB B.XMP C.HMP D.MXP
A.密封噴射式鉆頭 B.密封噴射式保徑鉆頭 C.滑動(dòng)噴射式鉆頭 D.滑動(dòng)噴射式保徑鉆頭