短語(yǔ)詞組短語(yǔ)drill l collar 鉆鋌Slick Drill Collar 普通鉆鋌drill collar number [油氣]鉆鋌數(shù)字Drill Collar Fingerboard 鉆鋌指粱Drill Collar Slip 鉆鋌卡瓦weight drill collar 偏重鉆鋌drill collar sroove 鉆鋌應(yīng)力減輕槽drill collar stand 鉆鋌立柱 返回 drill collar