The problem is the low thermal conductivity of air.
问题在于空气的热导率很低。
There is a problem of controling multiple thermal parameters in heat and mass transfer experiment.
在传热传质实验中经常存在多个热力参数的控制问题。
There is a problem of controling multiple thermal parameters in heat and mass transfer experiment.
在传热传质实验中经常存在多个热力参数的控制问题。
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