The variation of relative molecular mass and its distribution in the process of SBR and PS (HIPS) were determined by gel permeation chromatograph (GPC).
使用凝胶渗透色谱仪（GPC）测定了丁苯橡胶（SBR）及聚苯乙烯（PS）和高冲聚苯乙烯（HIPS）在不同生产工艺条件下的相对分子质量及其分布的变化。
When polymer relative molecular mass and its distribution width are the same, the polymer displacement efficiency increases with the increment of the core permeability variation factor.
当聚合物的相对分子质量及其分布宽度相同时，随着岩心渗透率变异因数的增大，其聚合物驱采收率也随之增加。
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