Global S&T Development Trend Analysis Platform of Resources and Environment
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| 当前检索式 | ((ALL：first cloud-to-ground lightning flash)) |
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| American Geophysical 3 | European Space Agenc 3 | EurekAlert 2 |
| EurekAlert! 2 | European Centre for 2 | Science Daily 2 |
| American Meteorologi 1 | Massachusetts Instit 1 | Science X network 1 |
