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.

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一般叶角越小，冠层受光越优越。

Generally, the smaller the leaf Angle was, the better the light distributed.

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一般叶角越小，冠层受光越优越。

Generally, the smaller the leaf Angle was, the better the light distributed.

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