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。
应用推荐