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单词
polar-cap absorption
释义
polar-cap absorption
polar-cap absorption
[
′pō·lər ‚kap əb‚sȯrp·shən
]
(geophysics)
Very strong attenuation of radio waves over the polar regions during strong solar flares, due to extremely heavy ionization of the upper atmosphere. Abbreviated PCA.
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更新时间:2026/4/17 8:42:26