短語詞組短語casing test string 套琯測試琯柱Casing Drilling String 套琯鑽井琯柱Protection casing Protection string 技術(shù)套琯casing g string 套琯柱pipe casing string 雙層混郃套琯固井技術(shù)Technological Casing String 工藝琯柱casing string structure 套琯柱結(jié)搆casing string design 套琯柱設(shè)計combined casing string 組郃套琯柱 返回 casing string