分析结果表明，叶冠的紧度由预扭角和工作载荷决定，离心力对紧度的变化起主要作用。
Analysis results indicate: shroud tightness is determined by pre-twist Angle of shroud and working load, the centrifugal force plays a main role to the tightness change.
结果表明，预扭后扭力轴弹性工作应力范围得到极大扩展，其主要原因在于预扭塑变形成的表面残馀应力。
The results indicate that the elastic operating stress range of a torsional axis is extended greatly by pre-twist process and the main reason lies on surface residual stress.
水工渠道倒虹吸扭坡模板的支撑采用预埋筋支撑方法，很好地解决了扭坡模板支护问题。
The method of pre-embedded steel bar is used in the supporting of hydraulic channel inverted siphon torsion slope formwork, which solved the problem of torsion slope support.
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