The various ingredients in tread compound were optimized with the orthogonal experimental method to lower the rolling resistance of tire tread without sacrificing its wet traction.
采用正交试验方法，对胶料各组分进行优化，使胎面胶滚动阻力降低，同时又能保持良好的抗湿滑性能。
Factors influencing the yield were investigated by the orthogonal experimental method.
采用正交实验法考察影响收率的因素。
The EDTA cleaning inhibitor has been screened and studied, and the prescription of multi-component composite inhibitor being optimized by using the orthogonal experimental method.
对EDTA清洗缓蚀剂进行了研究和筛选，并用正交试验法对所选出的多组分复合缓蚀剂配方进行优化。
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