Non-stoichiometric defects often occur in transition-metal compounds.
非化学计量的缺陷常常出现在过渡金属的化合物中。
This paper reviews the types of catalyzer of coal gasification, and introduces the catalysis of metal compounds.
综述了煤气化反应催化剂类型，介绍厂金属化合物的催化作用。
Propylene copolymer, polypropylene composition, use thereof, transition metal compounds, and catalysts for olefin polymerization.
丙烯共聚物，聚丙烯组合物及其用途，过渡金属化合物和烯烃聚合催化剂。
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