查询词典 polyesters

NMR studies indicated that the degrees of branching of polyesters are excess of 50%.

NMR的表征结果说明由两种单体聚合得到的超支化聚酯的支化度都在50%以上。

The effects of central core in hyperbranched polyesters to solubility and intrinsic viscosity were studied.

研究了中心核分子对HBPE的溶解性、特性私度的影响。

The purpose of this thesis work was educed after discussed thatthe disadvantage of polyesters and advantage of polyphosphazenes.

讨论了脂肪族聚酯的不足之处以及聚磷腈的优势特点，从而提出了本论文研究工作的目的和意义。

Enzyme catalyzed synthesis of polyesters is an eco-friendly and effective technique.

酶催化聚合是合成环境友好高分子聚合物的有效方法之一。

PHAs are polyesters that were synthesized and accumulated as granules in bacteria.

PHAs是在细菌体内产生的聚脂类并以颗粒形式堆积在细菌体内。

In general, thermoplastic polyesters have good retention of properties when exposed to water below their glass transition temperature.

当暴露在他们的玻璃转变温度下面浇水，大体上，热后可塑性物质多元酯有财产的好保持。

The results show that all-aromatic polyesters with high molecular weight can be synthesized in ...

取代基的引入降低了共聚酯的熔点，而取代基链长直接影响共聚酯的熔点。

In this thesis, the methods of preparating new type polyesters and siloxane- polyester copolymers were studied. And their application were discussed thoroughly.

本文研究了新型聚醚酯和有机硅改性聚醚酯消泡剂的制备方法，并对其应用进行了深入探讨。

Aliphatic polyesters is a kind of biodegradable polymer.

脂肪族聚酯是一种可生物降解的新型高聚物，可通过化学催化、发酵和酶催化来合成。

These unsaturated polyesters provide an excellent sanding foundation for further finishing steps.

不饱和聚酯为其它涂层提供了很好的砂光基层。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。