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基本電學
廖威銘 (延伸知識 (密爾(mil), 1 mil = {\displaystyle {\frac {1}{1000}}}{\frac …
基本電學
廖威銘
延伸知識
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1 C.M. = {\displaystyle {\frac {\pi }{4}}}{\frac {\pi }{4}}平方密爾,1平方密爾 = {\displaystyle {\frac {4}{\pi }}}{\displaystyle {\frac {4}{\pi }}圓密爾
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