The results showed that there were distinct differences in micro-fibril Angle, width of growth-ring and tracheid diameter.

结果表明，管胞直径和微纤丝角及生长轮宽度等指标表现为差异显著。

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The result shows that:(1)Micro-fibril angle increases gradually from the center to the edge in radial direction, and the surface area percentage of its fiber band has the same variability;

结果表明，微纤丝角径向自内向外略有减小，纤维股面积比径向自内向外逐渐增大；

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