Method: The orthogonal test of four factors at three different levels were used.
方法：采用四因素三水平的正交试验法，筛选静脉穿刺涂剂的配方。
Raw materials for producing tipping base paper, quality index, the production process and operation method, and equipment performance of paper machine are four respects of the influence factors.
生产水松原纸所使用的原料、纸张的质量指标、生产工艺和操作方法、纸机的装备性能是影响因素的四个方面。
By method of chain iteration, the amount of energy saving can be calculated with single variation of any one of four main factors.
进而用“连锁替代法”推导出上述四个因素单独变化带来的节能量。
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