英语语法分析

Synthesize polytrimethylene terephthalate with higher characteristic viscosity and nucleating agent.

采用具有较高特性黏度、含成核剂的聚对苯二甲酸丙二醇酯（PTT）。

This is a compostable bioplastic which retracts at temperatures lower than polyethylene terephthalate.

这是一种生物塑料是在堆肥温度比聚对苯二甲酸乙二醇酯的低缩回。

Unreinforced, medium high viscosity polybutylene terephthalate resin for extrusion and injection molding.

无加强，中高粘度聚对苯二甲酸丁二酯树脂的挤出和注塑成型。