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简述了用本体平衡法、逆流气相色谱法、自旋回声脉冲梯度场的核磁共振法和激光全息干涉技术测定聚合物体系中小分子物质的扩散系数。
The diffusion coefficient of small molecules in polymer system was described by the method of ontology balance, countercurrent gas chromatography, spin echo gradient field and laser holographic interferometry.