茂金属聚乙烯的分子链长支化结构对其流变特性有重要影响，长支链可以使熔体弹性和剪切变稀效应明显增强。
The molecular long chain branch structure of metallocene polyethylene has great effects on it's rheological behavior, long chain branch can significantly enhance melt elasticity and shear thinning.
研究了双钝体旋涡脱离的流体动力学特性以及利用双钝体增强流体振动的最佳组合结构。
The dynamics characteristics of dual bluff body vortex and the best structure of dual bluff body vortex improving fluid oscillation are studied.
结果CT增强扫描可强化，瘤周脑水肿明显的病人，其瘤体及瘤周水肿区毛细血管超微结构均有不同程度的改变。
Results as to those foci enhanced CT-scan in different degree with irregular PTBE, the tumor bodies and PTBEs all had some changes in capillary ultrastructure.
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