Package yarn, when bleached by the special oxidative bleaching agent 197, can reduce looming holes, losses, and color difference between layers after dyeing.
用氧漂特效助剂197练漂后的筒子纱,染色后可减少上机破洞、层差和损耗,对实践生产具有指导意义。
Grey theory is applied to construct the model of locomotive failure rate of electric locomotive.
将灰色理论应用于电力机车机破率预测建模,结果表明,基本灰色理论用于机破率建模时误差较大。
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