four – phrases

Terms for subject Drilling containing four | all forms | exact matches only

English	Chinese
four-arm instrument	四臂测井仪
four-arm instrument	四臂下井仪
four-arm instrument	四臂井径仪
four-blade	四刮刀钻头
four-cycle engine	四冲程发动机
four-point bit	四刮刀钻头
four-roller bit	四牙轮钻头
four-way bit	四刮刀钻头
four-way union	四通由任
four-way valve	四通阀门
four-wing bit	四刮刀钻头
four-wing pattern bit	四刮刀钻头
surfaced or dressed four sides	四面磨光修整或加工过的