physical magnification factor

The experiment synthesized PMF resins was taking phenol,melamine,formaldehyde as main materials.

研究考查了各原料配比对PMF树脂性能的影响,取n(F1)/n(P)、n(M)/n(P)、n(F2)/n(M)、n(NaOH)/n(P)为4个因素,对其进行优化试验,从而得到最佳优化配方。