admission
发表于 2025-3-28 17:19:53
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易于
发表于 2025-3-28 18:44:34
,Mössbauer spectroscopy,In Mössbauer spectroscopy transitions are observed between the energy levels in an atomic nucleus in the gamma-ray region of the electromagnetic spectrum. When a gamma-ray is emitted from a nucleus in a free state, such as a gas, that nucleus recoils in the same way as a gun when a bullet is fired.
严厉谴责
发表于 2025-3-28 23:38:46
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Acupressure
发表于 2025-3-29 03:57:41
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后退
发表于 2025-3-29 10:00:17
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Pedagogy
发表于 2025-3-29 12:56:40
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