英语语法分析

GEARMASTER PGP oils are fully synthetic gear oils based on polyglycol.

油是基于聚乙二醇的全合成齿轮油。

This invention is about refinement method of polyglycol produced by synthesis method.

本发明是关于利用合成法制得的聚乙二醇的提纯方法。

The present invention discloses a kind of polyglycol modified antitumor compound and its preparation process.

本发明公开了一种聚乙二醇修饰的抗肿瘤化合物及其制备方法。