There being an incorrect cognition on choice of control valve flow direction in the engineering circle, an elaborate explain pointing to this problem is presented.

工程上对调节阀流向的选择存在误区，文章就此作了详尽的解释。

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This paper introduces the overall situation of invisible web and academic invisible web, pointing out the key problem for finding academic deep web is to find deep web databases.

介绍隐蔽网络和学术隐蔽资源的基本情况，提出查找学术隐蔽资源的核心是找到相关的数据库。

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Yet, after pointing out this problem, Oz goes on to scare the you-know-what out of anyone who falls into this category by making his own story far more dramatic than the reality.

FORBES: Dr. Oz's Shameless Play For Ratings Discourages Life Saving Procedure While Demeaning True Cancer Survivors