突然
发表于 2025-3-21 18:30:49
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缓和
发表于 2025-3-21 22:08:47
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Opponent
发表于 2025-3-22 00:27:36
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浮夸
发表于 2025-3-22 05:31:37
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Default
发表于 2025-3-22 08:53:40
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缩短
发表于 2025-3-22 13:16:02
Patricia M. Davies MCSP Dip. Phys. Ed.flux (.) across a current “tube” (which delimits a closed surface) is zero, as in . (see also Chapter 1). Following on from Ostrogradsky’s theory, it would indicate that div . = 0, and the conservation of charge therefore would give .. This hypothesis indeed could be used as a starting point in defining quasistatic states.
冷淡一切
发表于 2025-3-22 17:33:31
Magnetic Properties of Materials,not true as we have just seen. Nevertheless, we can define a pseudoscalar potential (.*) such that . V* where D represents points without current, as at these points . (a pseudoscalar is a scalar that is defined by its being limited to certain points).
压倒
发表于 2025-3-23 00:03:24
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勾引
发表于 2025-3-23 02:28:42
Textbook 2007 electromagnetism to a wide range of undergraduate science majors in physics, electrical engineering or materials science. However, by making lesser demands on mathematical knowledge than competing texts, and by emphasizing electromagnetic properties of materials and their applications, this textboo
troponins
发表于 2025-3-23 09:09:09
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