转速

Utilized the correlative knowledge of mathematics and theoretical mechanics, the movement measure of the rolling forming of rectangle ring have been studied that based on the ring rolling theory. And the corresponding geometrical models and mathematical models have been established. It was revealed the variation law of ring in the cold rolling process.With the rolling processing, the inside and outside diameters of ring gradually increased with the cures similarly hyperbolic and the augment speed of the inside diameter was obviously larger than the augment speed of the outside diameter. With the rolling processing, the displacement, speed and acceleration of the ring centre gradually increased in the feeding direction in the horizontal and vertical ring rolling mill. With the rolling processing, the moment of inertia which ring reeled its centre and the whirligig of ring gradually increased. It caused the rotary speed gradually decreased. And it was benefit to decrease the circle tolerance and improve the precision of final molding.

本文基于环件轧制理论，运用相关的数学知识和理论力学知识，研究了冷轧过程中矩形截面环件轧制成形的运动测量，并建立相关的几何模型和数学模型，揭示了冷轧过程中环件的变化规律：随着轧制过程的进行，环件的内外径随类似于双曲线的曲线逐渐增大，且环件内径增大速度大于外径增大速度；在卧式轧环机和立式轧环机下，随着轧制过程的进行，环件中心的位移、速度及加速度不断增大；随着轧制过程的进行，环件绕其中心的转动惯量不断增大，导致环件的转速不断减小，这样有利于环件的整圆和最终成形环件的精度。

The analysis results show the effect of non-symmetry film force, nonlinear stiffness and nonlinear friction force on dynamical behavior of rotor system has great relation with rotation speed. The chaotic behavior could exist in a widder parameter region, and the chaotic evolutive rule is more complicated.

发现非对称油膜力、非线性刚度和非线性摩擦力对转子系统动力学行为的影响与转速有很大关系，碰摩转子系统可以在较大参数范围内出现混沌运动状态，并且混沌运动的演化规律更为复杂。

This current control VWF which control the wind machine to create the wind.

用此电流输入变频器，变频器控制风机的转速与这个具体的电流对应，从而达到控制风机的目的。

This paper describes some basic problems in the design of FES system,including the selection of materials,design of flywheel configuration,windage and bearing losses of flywheel,and determination of the optimun rotation speed.Seal and bearing are explained too.Moreover,fundamental properties of FES are discussed.

本文讨论了飞轮贮能系统设计的几个主要问题，包括飞轮转子材料的选择和形状的设计，飞轮的各种损耗及最佳转速的确定，对飞轮贮能的密封、轴承和系统的性能也作了讨论。

In order to obtain a nonlinear dynamic control law which has global stability,the "workless force" is abstracted to simplify the induction motor control using the passivity theory.

为了实现异步电机转速的全局稳定非线性动态控制，应用无源性理论从能量的角度分析异步电机，从中分离出不必抵消的"无功力"，简化了异步电机的控制，并据此导出一个全局稳定的非线性动态输出反馈控制律。

Worm wheel and worm —Used to transmit the turning force and rotary motion between two perpendicular axes.

蜗轮蜗杆用于传递两垂直交叉轴间的动力和转速。

The results reveal that, in some cases, the efficiency of helical gear is not as good as that of worm and wheel drive ; however, the efficiency of the worm helical gear drive in certain torque and the scope of rotational speed is still more close to that of worm and wheel drive.

结果发现虽然斜齿轮与蜗杆的传动效率在试验中不如蜗杆蜗轮传动，但是在一定的转矩和转速范围内，蜗杆斜齿轮传动的效率还是较接近蜗杆蜗轮传动。

Our aim: to achieve high-speed bearings worry-free operation, are willing to provide the data needed.

我司的宗旨：达到高转速轴承无忧运转，愿意为用户提供需要的数据。

Be yond this point ,the engine torque decreases more rapidly with an increase of speed .

过了这一点，发动机扭矩随着转速的增加而迅速的减小。

The effects of reaction temperature,reaction time,ultrasound frequency,agitating velocity and HCl amount on the yield and purity of abietic acid were investigated by orthogonal experiment.

通过正交优化实验考察了反应温度、反应时间、超声波频率、搅拌转速、盐酸用量对枞酸单离收率和纯度的影响，确定最佳异构化反应条件为：超声频率47.2 kHz，反应温度55℃，盐酸用量0.06 mL盐酸。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。