间冷式电冰箱箱体结构中存在流动换热的结构，这一特点决定了该类电冰箱箱体模型的建立与求解有别于直冷式。
The establishment and solution of cabinet models of indirect cool refrigerator are different from that of direct cool refrigerator.
在分析各国整体切削具不提钻可换式钻头结构及存在主要问题的基础上，提出采用整体旋转切削具可换式钻头。
Based on analyses about the structures and existing problems of integrally retractable alternative cutting element bits, a integrally rotary replacing cutting element bit was proposed.
换热器的结构型式不同，其换热效率差别很大。对管壳式换热器结构做出局部改动，可以提高换热效率。
Heat exchange efficiency varies greatly with different structures of heat exchangers. Partial modification of the tubular heat exchanger can raise its heat exchange efficiency.
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