So far there has been little research on the theory of hotel's VI systematic design due to some reasons, for example the poor acknowledge and short time of designing.

由于认识程度不够、设计时间不长等各种原因，到目前为止，国内对经济型酒店VI系统设计的理论研究很少，几乎为空白。

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It is one of the important reasons that the research on the metal strip deformation mechanism of tension leveling is not sufficient and systematical enough yet.

究其原因，其中很重要的一条便是对于金属带材拉伸弯曲矫直的变形机理还缺乏深入系统的研究。

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Introduction of the topics on the reasons, research and paper used in research methods.

导论中介绍了选题原由、研究概况和本文采用的研究方法。

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The company cited 15 cents of the shortfall coming from a weaker-than-expected flu season, 7 cents from the decline of the euro, and 4 cents due to greater-than-expected spending on research and development among the reasons for the cut.

FORBES: Magazine Article

Dr Thiemann says there are several possible reasons for differences between the new findings and the conventional wisdom, which was based on research trials of clot-busting drugs conducted about a decade ago.

BBC: Heart attack drug 'can kill'