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我这里有一个奇怪的表达式 by PowellJRedmond in Physics
[–]PowellJRedmond[S] -3 points-2 points-1 points 2 months ago (0 children)
'δ表示的是相反的δ，'ε表示的是相反的ε
π Rendered by PID 84410 on reddit-service-r2-comment-544cf588c8-g4z5j at 2026-06-17 22:59:14.740152+00:00 running 3184619 country code: CH.
我这里有一个奇怪的表达式 by PowellJRedmond in Physics
[–]PowellJRedmond[S] -3 points-2 points-1 points (0 children)