The article is a general review of the test and research work on fracture in relation to spiral welded pipes at home and abroad.

文章综述了国内外有关螺旋焊缝管的断裂试验和研究工作的概况。

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The main work of this thesis includes: (1) Research process review.

本文的主要工作包括：(1)研究进展综述。

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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。

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Institutional Review Boards, the local bodies that check research on humans and are the main overseers of such research, are swamped with work, sometimes examining hundreds of proposals a year.

ECONOMIST: Don��t let it happen again