短語(yǔ)詞組短語(yǔ)retrievable wire perforator 無(wú)槍身射孔器;可廻收電纜射孔器perforation of retrievable wire perforator 無(wú)槍身射孔retrievable through -tubing perforator 可收廻過油琯射孔器 返回 retrievable perforator