The catalyst used is one three-metal system including palladium chloride, ferric chloride and the chloride of one first main group element.

所用的催化剂是由氯化钯和三氯化铁加上第一主族元素的氯化物中的一种组成三金属体系。

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This paper gives a review on the research work of organogallium complexes formed by gallium and main group element, transition element as well as typical ligands.

对最近几年镓与主族元素、过渡元素及其他一些典型配体形成的有机镓配合物的研究进展作一概述。

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Of course, the block of element declarations that are substitution group members can be managed in a schema module that is stored separately and included in a main schema.

当然，作为替换群成员的元素声明块可以在一个单独存储并包含在一个主模式中的模式模块中管理。

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The main element was the ex-Milenio group, which had been schooled by its allies, the Zetas, in unconventional warfare, and later turned against them.

NEWYORKER: Silver or Lead