短语词组短語steam soot -blower system 蒸汽吹灰系統pulsating soot -blower 脈沖吹灰裝置boiler soot -blower 鍋爐吹灰器soot -blower retrofit 吹灰器改造sonic soot -blower 聲波吹灰器rotating type soot -blower 鏇轉式吹灰器retracting type soot -blower 伸縮式吹灰器 返回 soot blower