本文首先介绍选题的来源、背景和研究意义，指出论文的主要研究内容与目的，明确研发流程再造的动因。

In this thesis, firstly, introduce the topic's origin and background, the research significance, the researching scope and goal, point out the R&D process reengineering reason.

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文章首先介绍了课题来源和研究背景。

The source and the research background of this project are introduced firstly.

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本文研究了全血和血清背景吸收的来源及特点。

The character and source of background absorption of whole blood and serum are studied.

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