那你要怎样算plasma，还有电磁场，旋转磁场？
所有跟帖：
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工程数学里不是一门课叫数学物理方程么？物理系的课叫数学物理方法（比如北大的郭敦仁）
-rmny-
♂
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12/03/2025 postreply
17:18:59
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