Intensive combustion should be used in water heater. Heat convective surface is better than heat radiant surface for heat transfer in water heater.
在热水器上应采用强化燃烧方式，尽量采用对流受热面，减少辐射受热面。
The paper describes the measuring technique of infrared radiant heat flux density reached the surface or absorbed by the surface of spacecraft during thermal balance test.
文章介绍了在航天器热平衡试验中到达航天器表面或被其吸收的红外辐射热流密度的测量技术。
The thermograph obtained by a thermal imaging system is only the distribution of radiant temperature of the surface of measured devices, not the true temperature.
用红外热成像系统直接获得的热像图，是被测器件表面辐射温度的分布，并不是真实温度的分布。
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