太阳能热水器是我国太阳能热利用较成功的可再生能源产品，太阳能热水器按选用的集热器种类可分为真空管型太阳能热水器和平板型热水器。
Solar water heater is renewable energy sources product which widely used in China. It can be devided into vacuum tube solar water heater and flat panel solar water heater.
论述了各种类型热试验（热平衡试验、热真空试验、热循环试验） 在航天器研制中的重要性及它们的做法要点。
The paper discusses the importance and implementation of various types of thermal tests (thermal balance test, thermal vacuum test and thermal cycling test) during the spacecraft development phase.
论述了各种类型热试验（热平衡试验、热真空试验、热循环试验） 在航天器研制中的重要性及它们的做法要点。
The paper discusses the importance and implementation of various types of thermal tests (thermal balance test, thermal vacuum test and thermal cycling test) during the spacecraft development phase.
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