查询词典 PLA

We use the method of decomposing PLA to synthesize lactide by means of orthodoxical experiment method.

本文主要进行了丙交酯的合成工艺研究及聚乳酸的开环聚合工艺研究。

We investigate how the type of lactide affacts the molecular weight of PLA at the same time.

并考察了丙交酯类型及纯度对聚乳酸分子量的影响。

PLA has been produced by ring-opening polymerization of lactide or direct polycondensation of lactic acid.

制备聚乳酸常通过乳酸的直接聚合或丙交酯的开环聚合两种方法。

When lactide was purified byethyl acetate for 4 times, it was pure enough to polymerize to be PLA.

以乙酸乙酯作为重结晶溶剂，当重结晶次数达到四次后，其纯度已达到丙交酯聚合的基本要求。

PURAC offers the lactide monomers as polymerization feedstock and in cooperation with Sulzer the polymerization technology to make PLA.

普拉克提供的原料和聚合与苏尔寿技术合作的乳酸聚合单体，使人民解放军。

Two main synthesis methods of PLA, condensation polymerization of lactic acid and ring-opening polymerization of lactide in recent years are described in details, and the situation of production is analyzed as well.

最后，对聚乳酸的合成及应用前景进行了展望，并指出可生物降解材料聚乳酸一旦工业化，它在医用及降解塑料方面将会有难以估量的应用前景

It was shown that high optical purity lactide and crystallization in polymerization led to higher molecular weight PLA using low-toxic zinc lactate as catalyst.

结果表明，合适的裂解温度有利于合成高光学纯度的丙交酯；在低毒乳酸锌的催化作用下，高光学纯度的单体以及聚合过程中的结晶都有利于制备高分子量聚乳酸。

Most of the PLA's landing craft are small and incapable of operating on the open ocean; its larger landing ships are old and in need of replacement.

解放军的多数登陆船只都很小，不能在开阔的洋面作战；较大型的登陆舰则是陈旧的，需要更新。

The military legal system is composed of the legal organs or personnel authorized by the Bureau of Legislative Affairs of the CMC, the various general departments, services and arms and military areas commands, and are in charge of the legal work of the entire PLA as well as the various army units.

军事法制机构，由中央军委法制局和各总部、各军兵种、各军区编设的法制机构或人员组成，负责管理全军和军队各单位的法制工作。

He was born in 1949, when China was liberated by the PLA.

他出生于1949年，中国人民解放军在那是解放了中国。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。