When specifying the transformer , the nominal full load voltage is usually reduced to allow for the minus 20 % resistance tolerance of the elements and slow furnace heatup 当指定变压器时，考虑到要减去20 %的电阻阻值，通常要减少额定满负电压并且使熔炉加热缓慢。
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The change on the wordings heatup the debate in the whole world , astronomers are polarized , making this the most heated debate in astronomy in this millennium 这次文字上的改动，牵起世界的话题，天文学界对冥王星的看法也两极化，成为本世纪天文界最激烈的辩论。
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When specifying the transformer , the nominal full load voltage is usually reduced to allow for the minus 20 % resistance tolerance of the elements and slow furnace heatup 考虑到要减去20 %的电阻阻值，通常将额定满负电压值减去5 %到10 % 。通常在机器空转或者缓慢加热时用到低电压插孔。
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