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ionization front
释义
ionization front
ionization front
See Strömgren sphere.
ionization front
[
‚ī·ə·nə′zā·shən ‚frənt
]
(astronomy)
A transition region that separates interstellar gas in which a given atomic species (usually hydrogen) is mostly ionized from interstellar gas in which it is mostly neutral.
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hot off the hook
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hot oil traced
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hot on
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hot on his tracks
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hot on it
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hot on my tracks
hot on my trail
hot on (one's) heels
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更新时间:2026/6/19 4:52:35