就叶冠接触状态与叶冠磨损之间的关系进行了讨论；
The relationship between the shroud contact state and shroud wear was discussed.
同时，依据共振疲劳损伤寿命理论确定叶冠的最佳间隙值，来增加使用寿命。
According to the resonant fatigue-damage life theory, the optimum clearance between neighboring shrouds is determined to increase the service life.
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.
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