sliding speed短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 滑动速度 The results show that, with rise of the applied load and sliding speed, the friction coefficient decreases. 温度对准晶材料表面的摩擦系数影响明显比其他因素大，温度的增加明显提高地表面摩擦系数。 dictall The wear morphologies was investigated by SEM. Nano grade copper powder lubricating is carried out by spacer and ball at the low sliding/span> speed and medium sliding speed. 通过 SEM扫描电镜对磨痕形貌进行分析，提出了低滑动速度和高滑动速度下，纳米级铜粉分别以“垫片”和“滚珠”形态参与润滑。 cnki