短語詞組短語casing -head 套管頭casing screw head 套管母扣護絲casing drive head 套管帽casing g head 套管頭casing circulating head 套管循環(huán)接頭Humate additive for casing -head mud 腐殖酸鉆井泥漿添加劑cement casing head 水泥頭;注水泥套管頭 返回 casing head