莫来石凝胶是制备超细莫来石的优良先驱物，主要分为单相和双相凝胶。
Mullite gels are excellent precursors for preparing fine mullite. Mullite gels consist of monophasic gel and diphasic gel.
结果表明，与乙二烯基先驱物相比，对于TBTDET和TBTEMT材料，特丁基群是最稳定的基群。
The results indicated that the tert-butyliminogroup is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.
使用透射电镜和X射线衍射对先驱沉淀物的形貌及煅烧过程的相转变进行了研究。
The precipitate precursor and phase transformation was characterized by TEM and X-ray diffraction.
安东尼·范·列文虎克——使用显微镜的先驱，在1702年观测发现，把被认为死亡了的干枯的“微生物”沉积物放在雨水中时它们又复活了。
Antonie van Leeuwenhoek, pioneering microscopist, observed in 1702 that dry sediments of "animalcules", expected to be dead, were brought back to life when exposed to rain water.
本论文结合先驱体转化技术和模板技术，成功制备了一系列有序大孔多孔材料，把多孔材料扩展到非氧化物陶瓷领域。
In this study, a series of ordered macroporous non-oxide ceramics were successfully fabricated for the first time by combining template and preceramic polymer techniques.
采用先驱体转化法制备了2.5维石英纤维织物增强氮化物陶瓷基复合材料。
Using the polymeric precursor impregnation and pyrolysis method, 2.5-dimensional braided silica fiber-reinforced nitride-based composites(2.5D-SRNCs)were prepared.
本发明公开了一种用于制作精细陶瓷构件的先驱体聚合物及其合成方法。
The invention discloses a precursor polymer for manufacturing fine ceramic components and a synthesis method thereof;
它是此后所有奥林匹克吉祥物的先驱。
Schuss was the skiing forerunner of all future Olympic mascots.
它是此后所有奥林匹克吉祥物的先驱。
Schuss was the skiing forerunner of all future Olympic mascots.
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