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