短語詞組短語seamless boiler steel tube 無縫鋼管boiler water tube 鍋爐水管boiler r tube cleaner 鍋爐管清潔器boiler r tube 鍋爐管;爐管boiler convection tube bank 鍋爐管束boiler front tube plate 鍋爐煙管前板boiler back tube plate 鍋爐煙管后板boiler water tube detail 鍋爐水管boiler generating tube 鍋爐蒸汽產生管 返回 boiler tube