在相同的-NCO浓度下，不饱和聚酯树脂的增稠速度随分子量的提高而加快；
When the -NCO concentration of diisocyanate compounds is the same, the thickening rate will be faster with the increase of its molecular weight;
在相同的-NCO浓度下，不饱和聚酯树脂的增稠速度随分子量的提高而加快；
When the -NCO concentration of diisocyanate compounds is the same, the thickening rate will be faster with the increase of its molecular weight;
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