| 1. | Yeau - ren jeng and hung - jung tsai , 2004 , “ grain flow for rough surfaces considering elastic / inelastic grain collision , ” proceedings of asme / stle joint international tribology conference , trib 2004 - 64296 , long beach , california , usa . oct . 24 - 27 蔡宏荣, 2004 , “含表面粗糙度之颗粒流体特性探讨, ”第五届海峡两岸青年科学家学术研讨会,北京,中国。 |