the lower region of the solar chromosphere, formerly regarded as a distinct layer where the dark Fraunhofer lines of the solar spectrum are produced…
| 单词 | θ996 |
| 释义 | the world > the universe > sun > [noun] > reversing layer (1) reversing layer1873 the lower region of the solar chromosphere, formerly regarded as a distinct layer where the dark Fraunhofer lines of the solar spectrum are produced… |
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