算术平均温度在一顺流或逆流换热器中两种流体在换热器两端温差的算术平均值
The arithmetic mean temperature is the arithmetic mean of the temperature difference between two fluids at both ends of a co-current or counter-current heat exchanger
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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