短語(yǔ)詞組短語(yǔ)screw casing anchor packer 用螺紋裝置撐開及收縮的套琯封隔器casing anchor packer 套琯錨定封隔器well casing anchor 套琯錨casing anchor point 汽缸死點(diǎn)anchor casing packer 錨定式套琯封隔器 返回 casing anchor