从狭义来说, 换热器是一种容器.A heat exchanger, in a narrow sense, is a vessel.一效列管换热器中出来的冷凝液被用来预热进料.Condensate from the first - effect calandria is used for preheating the feed.波面板换热器是一种新型的换热设备,具有广泛的应用前景.The wavy plate heat exchanger...

“热情”的拼音为：rè qíng ...