传热面: conduction surfaceheat tra fer areaheat tra fer surfaceheat transfer frontheat transfer surfaceheat-transfer surfaceheating transfer surfacetransfer surface
Mean temperature difference for countercurrent flow and cocurrent flow in steady continuous heat transfer has been deduced uniformly 摘要采用统一的方法对定态传热逆流和并流的平均温差进行了推导。