英语语法分析

The experiment shows that, the pyrochlore phase can be rid of by the precursor synthesis.

结果表明，前驱体合成工艺能够在合成过程中避免焦绿石相的生成。

However, such materials are difficult to be fabricated without the appearance of a pyrochlore phase.

在铅基弛豫铁电材料的制备中，很难避免焦绿石相的出现。

Pt and Pt polynary systems, the pyrochlore-type oxide as the catalyst for methanol oxidation was reviewed.

综述了作为甲醇氧化催化剂的铂及铂的多元体系；钙钛矿型氧化物的研究现状。