无码av动漫精品一区二区免费

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20kV 油浸式電力變壓器
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對于額定容量為500kVA及以下的三相變壓器,表中斜線上方的負載損耗值適用于Dyn11或Yzn11聯接組,斜線下方的損耗值適用于YynO聯接組

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无码av动漫精品一区二区免费