结晶性聚合物在SLS成形过程中存在较大的收缩变形，工艺较难控制，但此类材料韧性和强度很好，因此其SLS制造有巨大的发展潜力。
It is difficult to sinter part of crystalline polymer material by SLS for large deformation of crystalline material shrinking in the process.
第三种方法包括：1将含极性取代基的染料分子合成；2控制染料分子的聚合或结晶过程。
The third approach involves: 1 the synthesis of certain molecules containing readily polarised groups of substituents, and 2 the controlled polymerisation or crystallisation of these molecules.
流动场诱导聚合物结晶不仅是一个非平衡的热力学基础问题，对于指导聚合物加工过程和控制产品的最终性能有着同样重大的意义。
Flow-induced crystallization of polymers is not only a fundamental Nonequilibrium thermodynamic problem but also of importance for polymer processing and the final properties of polymer products.
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