| 单词 | solar wind |
| 释义 | solar wind A continuous outward flow of charged particles, mostly protons and electrons, from the sun's corona into interplanetary space. The particles are controlled by the sun's magnetic field and are able to escape from the sun's gravitational field because of their high thermal energy. The average velocity of the particles in the vicinity of the earth is about 450 km s-1 and their density at this range is about 8 × 106 protons per cubic metre |
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