超支化聚合物的玻璃化转变温度随分子量的增加先增大，当分子量足够大时玻璃化转变温度不再受其影响。
The glass transition temperature of hyperbranched polymers rises with the increase of molecular weight. When the relative molecular mass was high enough it remained the same.
结果表明：随渗透率级差的增大，残留聚合物再利用提高采收率幅度先增加后减小；
The results indicate that with the permeability ratio increases, the enhanced recovery rate of residual polymer reutilization presents a first increases and then decreases trend;
研究结果表明，聚合物涂膜的拉伸强度随UPA和EGDMA用量的增加均呈现先增大后减小的趋势；
The experimental results show that the tensile strength of emulsion films firstly increases and then decreases with the increase of the UPA and EGDMA dosages.
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