1·To convert measurements of the Milky Way's rotation speed to mass, astronomers must rely on models of how dark matter is distributed in the galaxy.
要把银河系的转速转换成质量，天文学家要依靠模型，而这模型能显示暗物质在星系中是怎样被影响的。
2·The theory and method of the rotor position detection and rotation speed based on absolute photoelectric encoder are introduced.
介绍了基于绝对式光电码盘的转子位置检测与转速测量的原理和方法。
3·This paper introduces the structure and principle of the pressure regulating overflow valve and rotation speed regulation valve used in a new type of cleaner.
介绍了新研制的一种新型清洗机所采用的调压溢流阀和转速调节阀结构及其原理。
4·This paper presents a state space model based on spindle rotation speed for thermal errors of machine tool.
本文提出了一种基于主轴转速的机床热误差状态方程模型。
5·Because bearing stiffness have an effect on interface rotation speed, so the original only introduced computational method of bearing stiffness.
因支承刚度对转轴临界转速有影响，故仅介绍支承刚度的计算方法。