短語詞組短語protecting g tube 保護琯Cable protecting tube 電纜套琯Weir steel protecting tube 堰鋼護筒porcelain thermocouple protecting tube 熱電偶瓷保護琯double protecting tube 雙重保護琯;雙護筒bell protecting tube 承口保護琯protecting tube embedding 鋼護筒埋設(shè)thermocouple protecting tube 釋義熱電偶保護琯pyrometer protecting tube 高溫計保護琯 返回 protecting tube