介电强度 » Dielectrical strength 超250万的家庭已经摆脱贫困 » More than 2.5 million families has been lift themselves out of poverty 越来越多的人认为学好英...
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The paper also presents the results about dielectrical breakdown voltage test and dielectrical strength for the coal.
本文还报告了同种煤的绝缘击穿电压及绝缘强度。
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