但是，由于涉及椭圆积分，一般又不具有均匀电荷环空间势分布的对称性，求解和讨论是比较困难的。
However, because this problem involves elliptic integrals, generally not possessing symmetry of a uniformly charged ring, it is difficult to solve and discuss it.
结果表明：添加体积分数35％的粘结剂时提高压制温度会明显改善钨骨架孔隙度分布的均匀性；
The results show that the complex W-skeleton with a homogeneous porosity distribution can be obtained with 35% binder addition and fairly high temperature for compaction.
该区岩溶水资源分布具有明显的不均匀性和大面积分散补给而局部富集等特征。
The Karst water resource in this region is characterized by evident unevenness, large area dispersed recharge, and local enrichment.
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