不利
发表于 2025-3-25 03:41:02
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滑稽
发表于 2025-3-25 07:45:23
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婚姻生活
发表于 2025-3-25 11:55:15
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climax
发表于 2025-3-25 19:42:54
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JEER
发表于 2025-3-25 22:21:19
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pulmonary
发表于 2025-3-26 01:10:35
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傻
发表于 2025-3-26 07:52:58
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基因组
发表于 2025-3-26 12:04:03
The Building Blocks of Matter size, mass and density. The nucleus is a tiny bundle of concentrated mass and energy at the centre of the atom. It is about one hundred thousand times smaller than the atom itself and is, in turn, an aggregate of other particles: protons and neutrons.
大看台
发表于 2025-3-26 14:06:46
Radioactivity and Penetrating Power of Nuclear Radiationthe main types of decays (alpha, beta, gamma, internal conversion, electron capture, nucleon emission and fission), then we discuss the radioactive decay law, decay rates, mean lifetimes of isotopes, radioactive families and sequential decays.
heterogeneous
发表于 2025-3-26 18:06:32
Nuclear Reactions and Fissionly used to describe nuclear reactions. The remaining part of the chapter deals with nuclear fission, the process that is of fundamental importance for the production of nuclear power. Sections .–. examine in detail the distribution of fission fragments, the energy released in the fission reaction, t