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The idea that the earth is round is not a new one.
“地球是圆的”这种观点并不新鲜。
youdao
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A new measurement method of one-phase-earth fault current was proposed.
提出了一种“接地”电流的测量方法。
youdao
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A new measurement method of one-phase-earth fault current was proposed.
提出了一种“接地”电流的测量方法。
youdao