The bent pipe makes the flow field of impeller inlet strongly disordered.

与无弯管相比，弯管造成叶轮进口的流场紊乱。

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Further analysis indicated that external copper pollution was the major cause of the crack in the bent pipe.

进一步分析，认为外来铜污染是引起弯管开裂的主要原因。

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Set saddles in interval of 1m. Use saddles at two places at 90 bent pipe curve and more than three places at 180 bent pipe curve.

设置固定托架的间隔为1m以下，90度弯曲部位和180度弯曲部位要各使用2个和3个以上的托架。

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