之所以要详细叙述一下这座大坝，是因为这次改造设计目的是使它能经受住达到设计震级的地震和巨大洪水漫顶。
The modification was due to the concern with adequacy of the dam when subjected to the design earthquake or overtopping by large floods.
个人目录：重现一件自己生活中的事，配上旁白叙述，然后将其改造。
Self-inventory: Recreate an incident from your life and provide a narrative, then transform it.
本文叙述铸渣机改造的内容和在制作安装过程中采取的措施。
The article describes the modification content of the slag casting machine and the measures during the installation and manufacture process.
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