This paper presents a new process of axial modification for carbonized gears, and investigates the current density distribution in gear teeth. 叙述了硬齿面齿轮电化学齿端修形原理，对齿面上沿齿向的电流密度分布进行了分析。
A new scheme of tracer selection is developed to improve the quality and the density of cloud motion winds. 文中设计了一种示踪云选取算法，以改善云迹风的质量和密度分布。
