The molecules of carbon dioxide in the Earth's atmosphere affect the heat balance of the Earth by acting as a one-way screen.

地球大气层中的二氧化碳分子像一个单向屏一样影响着地球的热量平衡。

By making use of heat balance of finite elements in variable domain, a differential equation of control has been derived.

利用有限元的受热平衡，推导出可变域中发汗控制微分方程序。

Based on material balance and heat balance, the system equipment are examined and proved suitable to the need of production.

在物热衡算基础上，对该系统的设备进行了校核，均能满足生产需要。