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| 行星际辐射 | |||
| 地外辐射; 宇宙辐射 | |||
| 大气顶太阳辐射; 地球外辐射; 大气圈外太阳辐射 | |||
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extraterrestrial radiation : 2 phrases in 1 subject |
| Space | 2 |
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