当转速比为无理数时，研磨轨迹的分布较致密。
When this rotating speed ratio is an irrational number, the distribution of grinding track becomes finer.
一般来说，对于现代引擎，低转速比高转速效率更高。
In general, the efficiency of modern engines is better at lower rather than at high revs.
水库的建造使得地球的转速比起四十年前快了每天百万分之八秒！
Reservoirs have made each day eight millionths of a second faster than it was forty years ago!
研究发现：随着转速比增大，系统响应的最大振动幅度最终会增大。
It was found that with an increase in the rotating speed, the amplitude of the system response increases in the end.
发动机的扭矩曲线比较陡，对转速比较敏感，这和坐式摩托车的要求相适应。
The torque curve of the engine is quite steep and very sensitive to the rotating speed, which are conformable to the requirement by scooters.
对研磨均匀性来说，转速比函数幅值影响较大，相位的影响是很小，可以忽略。
Compared with the effects of amplitudes of the speed ratio function on the(lapping) uniformity, the effect of phase is much less.
仿真结果表明，电机转速比是影响交交变频轧机系统网侧基波功率因数与电流总畸变率的关键原因。
The simulation results show that the speed ratio of the motor mostly affects the total harmonic distortion of the current and the displacement power factor.
并在1933年首次提出解释星系外环在星团轨道上的转速比基于星系可见物质而得出的理论转速要高的概念。
The concept was first proposed in 1933 to explain why the outer galaxies in galaxy clusters orbit faster than they should, based on the galaxies' visible mass.
全新的动力装置以齿轮传动结构为特点，此结构允许前端风扇转速比中心部分慢3倍，优化了发动机各部分的速度。
The all-new powerplant features a geared architecture allowing the front fan to spin three times slower than the core, thus optimising the speed of each section of the engine.
研究了偏心率和转速比对去除效率的影响，与此同时研究了抛光模材料、抛光模胶层厚度、抛光模直径以及几何形状与去除效率的关系。
At the same time the effect of eccentricity ratio, speed ratio and the material, thickness of sub, geometry shape of polished die on removing efficiency are studied.
在双转子航空发动机中，由于转子系统不可避免地存在不平衡量，当两个转子的转速比较接近时，发动机会出现拍振现象，拍振将引起振动强度过大问题。
There is inevitable unbalance in the dual-rotor system of the aero-engine, the beat vibration will occur to engine when two rotors are operating at approximately the same speed.
在双转子航空发动机中，由于转子系统不可避免地存在不平衡量，当两个转子的转速比较接近时，发动机会出现拍振现象，拍振将引起振动强度过大问题。
There is inevitable unbalance in the dual-rotor system of the aero-engine, the beat vibration will occur to engine when two rotors are operating at approximately the same speed.
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