In order to ensure the construction quality in mass concrete of high-rise building work, with a view to the high-rise building construction technology of large volume concrete research.
为了确保高层建筑大体积混凝土工作的施工质量，有必要针对高层建筑中大体积混凝土的施工技术进行研究。
Because of large volume of English vocabulary, it is necessary to learn cluster and structure organization of modern English vocabulary in order to enlarge English vocabulary volume.
英语学习其中最重要的一个环节就是要多掌握词汇，而英语的词汇量很大，为了不断扩大英语词汇量，首先有必要弄清楚现代英语词汇的类聚状态和结构组织。
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