短語(yǔ)詞組短語(yǔ)discontinuous coal -burning boiler 間歇式加煤鍋爐industrial coal -burning boiler 工業(yè)燃煤鍋爐Batch coal -burning boiler 間歇式加煤traveling grate coal -burning boiler 鏈條燃煤鍋爐small -sized coal-burning boiler 小型燃煤鍋爐coal -burning boiler operated by handwork 燃煤手燒爐reform of coal -burning boiler 燃煤鍋爐改造mw coal burning boiler mw 燃煤鍋爐 返回 coal burning boiler