The release rate of wafer which was prepared by low average molecular weight PLGA is faster than high average molecular weight PLGA.
PLGA相对分子质量低的膜片释放速率较快，并且释放不很稳定。
It introduced the gel chromatography to determine the average molecular weight and molecular weight distribution of high polymer.
介绍了用凝胶色谱法测定高聚物的平均分子量及分子量分布。
For 481 experimental data points of 29 hydrocarbons, including high-molecular-weight hydrocarbons, the new method gives a relative average error of 3.2%.
对29种包括大分子的烃类物质，481个实验数据点，本方法的平均相对计算误差为3.2%。
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