The relationship between the type of distribution and of density of fibers of monoamine nerve in intracerebral vessels and their nerve regulation was discussed.
本文讨论了脑内血管神经纤维的分布类型、纤维密度与脑内微循环的神经源性调节的关系。
So it is very important to find out the variation regulation of wood ring density in growth process.
解剖树木生长过程木材密度变化规律，研究年轮内密度的变化十分重要。
Regulation of self- thinning is that relationship between DBH and average density of population accords with negative power function.
樟子松种群自疏规律为：平均胸径与密度的关系符合负幂函数模型。
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