1. The paper states the working principle of a new kind of non symmetric involute gear pumps, main characteristics and design of its relative parameters. 阐述了一种新的非对称渐开线齿轮泵的工作原理，介绍了泵的主要特性及有关参数的设计计算。
2. Compared with a standard involute gear, the unsymmetric involute gear could efficiently improve the tooth root bending strength by finite element analysis. 对实例的有限元分析表明非对称渐开线齿轮的齿根弯曲强度比对称齿轮有较大提高。
3. With the multi-grid method, the influences of surface roughness on the non-Newtonian thermal elastohydrodynamic lubrication of involute spur gear were investigated. 利用多重网格技术，研究了表面粗糙度对渐开线直齿圆柱齿轮非牛顿热弹流润滑的影响。
英英解释
adj.
1. especially of petals or leaves in bud; having margins rolled inward
2. (of some shells) closely coiled so that the axis is obscured
