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单词 thermopause
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thermopause

英汉-汉英词典
n. 热成层顶
词组 | 习惯用语
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  • thermostat n. 恒温(调节)器
  • thermocouple n. 热电偶;温差电偶
  • thermoplastic adj. 热后可塑性的 n. 热后可朔性物质
  • thermopile n. 热电对列;热电堆
thermopause 热成层顶
英语百科

Thermopause

The thermopause is the atmospheric boundary of Earth's energy system, located at the top of the thermosphere.

Below this, the atmosphere is defined to be active on the insolation received, due to the increased presence of heavier gases such as monatomic oxygen. The solar constant is thus expressed at the thermopause. Beyond (above) this, the exosphere describes the thinnest remainder of atmospheric particles with large mean free path, mostly hydrogen and helium. As a limit for the exosphere this boundary is also called exobase.

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更新时间:2025/6/20 8:47:36