最后本文在分析现有的集热器测试标准和实验基础上，建立了一个真空管空气集热器的测试标准文本文件。
At last, through studying the corresponding testing standard, a standard text for testing the thermal performance of evacuated air heater was put forward based on experiment.
最后本文在分析现有的集热器测试标准和实验基础上，建立了一个真空管空气集热器的测试标准文本文件。
At last, through studying the corresponding testing standard, a standard text for testing the thermal performance of evacuated air heater was put forward based on experiment.
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