In heating, ventilating, air conditioning and other engineering system, there are many problems concerned with convection heat transfer.
在供热、供燃气、通风与空调以及其它许多工程系统中，对流换热问题广泛存在。
The design of organic heat - carrying agent's heat - supply system is a systematic engineering with complicated mutual influencing factors.
有机载热体供热系统的设计是一项系统工程，其内容极为丰富，变化复杂。
The quality control of parts heat treated in the sealed box furnace is a system engineering, including design, control system of the furnace and heat treatment process as well as operating.
密封箱式炉热处理零件的质量控制是一个系统工程，包括炉子结构、炉子控制系统、热处理工艺以及操作，其中一个环节出问题都将影响热处理零件质量。
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