It indicates that there are significant differences for microfibril Angle, basic density, bending strength and rate of shrinkage of poplar 63 and poplar 69 by variance analysis.
方差分析表明：63杨、69杨微纤丝角、基本密度、抗弯强度和干缩率差异显著，说明63杨和69杨受滩地类型影响较大。
The variable function of vane Angle during loading is studied on the basic principle of dimensional analysis.
本文依据因次分析的基本原理，研究了装煤时旋叶升角的变化函数。
The variable function of vane Angle during loading is studied on the basic principle of dimensional analysis.
本文依据因次分析的基本原理，研究了装煤时旋叶升角的变化函数。
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