Systematic characteristics of polymers , designable ability of polymer molecules, systematic method in polymer molecular design are discussed.

高聚物分子的可设计性； 高聚物分子设计中的系统方法。

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Numerical simulation provides a reliable method to optimize the design of the die, the choice of metallic material for the die, and the operating conditions of the polymer pelletizing under water.

对造粒模板内部流动与传热的研究可以为模板结构的优化设计、操作条件的合理选取、模板材料的选择提供比较可靠地理论依据。

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