短语词组短語acoustic soot -blowing 聲波吹灰pulse soot -blowing 脈沖吹灰soot -blowing control 吹灰控制boiler soot -blowing 鍋爐吹灰optimizing soot -blowing 優化吹灰pulsating soot -blowing 脈沖吹灰 返回 soot blowing