... international factoring association 国际代理商协会 inverse of current ratio 反转流动比率 liquidity and working capital 流动性与营运资金 ...
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The effects of pulse current, frequency, duty ratio and inverse current in zincate system on the appearance and corrosion resistance of zinc coating are investigated.
研究了在锌酸盐镀锌体系中采用脉冲电流时，脉冲频率、脉冲的占空比、反向电流对镀层外观、耐蚀性的影响。
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