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。
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。
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。
In the earlier study of SLA, the main focus was on whether pair or group interaction could provide each member with Comprehensible Input which has been claimed to be a crucial element in SLA.
在早期的二语习得研究中，人们关注的焦点是检验小组或对子之间的互动是否能为每个成员提供二语语言习得中的一个重要因素：可理解输入。
In the earlier study of SLA, the main focus was on whether pair or group interaction could provide each member with Comprehensible Input which has been claimed to be a crucial element in SLA.
在早期的二语习得研究中，人们关注的焦点是检验小组或对子之间的互动是否能为每个成员提供二语语言习得中的一个重要因素：可理解输入。
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