介绍了选取该三项因子进行正交试验设计从而找出提高亚麻非织造复合材料强度的有效方案。
Doing orthogonal testing design by choosing three terms of factor and find out the effective method for improving linen nonwovens intensity.
采用三因素五水平二次回归正交旋转组合设计，研究玉米品种、密度、施肥措施对西昌地区玉米产量形成的作用效应，建立回归模型并分析各因子的作用规律。
Quadratic orthogonal regressive rotation design of three factors is applied to study the effect of varieties, density and fertilization to maize yield in Xichang ecological area.
设计开发一种工业用三相交流电参数仪，能够测得三相交流电各相的电压、电流、功率、功率因子等参数；
A three-phase alternating current parameters instrument to be used in industry is designed. It can measure the voltages, currents, power factors of each phase of three-phase alternating current.
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