不久以前，科学家还不得不亲自到图书馆去查阅文献，在那里他们只能一张张翻阅目录索引以便从各种满是灰尘的合订卷中找到他们需要的文章。
Not too long ago, scientists had to hoof it to the library to review the literature. And they had to flip through a card catalog to find that dusty old volume with the article they wanted.
最后列出了设计过程中翻阅及参考过的文献。
Finally has listed in the design process glances through and has referred the literature.
因此，笔者翻阅大量文献，结合现实，对此问题进行深入的研究。
So I have looked up lots of books and magazines to do researches on the question.
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