Furthermore, we studied the influence of length, radius and aspect ratio on the charge density relative distribution curve, showing that length and radius play an important role in relative charge distribution of tube and in tip respectively.

• 进一步研究了长度、半径和长径比对电荷密度相对分布曲线的影响，表明长度主要影响管身电荷密度相对分布，半径主要影响尖端电荷密度相对分布。