Polyesters are condensation polymers.

聚酯是缩和聚合物。

Xylene is used in polyesters (e.g. fabrics).

二甲苯用于制造聚酯(如纺织品)。

Polyesters are sometimes refereed to as oil-free alkyds.

通常情况下，聚酯也叫无油醇酸。

They were the first biodegradable polyesters to be utilised in plastics.

他们将要在第一次使用可降解塑料聚酯。

The thermal properties of polyesters were studied by temperature modulated DSC (ADSC).

采用温度调制式DSC技术（简称ADSC） ，研究了聚酯热性能的测试方法。