角速度

This paper studied the relationship between impulsive moment of radial tidal current and Alai phenomena, and concluded that: M acting on the earth's axis inspires Chandler wobble; the change of M depends on the interaction of the water, tidal force and the effects of the earth's rotation; under certain conditions, M changes dramatically during eclipse, which makes the amplitude of Chandler wobble change in the form of pulse.

本文研究了径向潮流冲量矩M与阿莱现象的关系，得出的结论是：M作用于地轴激发了Chandler摆动；M的变化取决于海水、引潮力和地球自转效应的相互作用；日食或月食期间，在一定的条件下，M变化的非常剧烈，引起Chandler摆动振幅脉冲式的变化，进而引起地球纬度的变化，最终导致地球表面重力加速度的变化；这种变化可以通过傅科摆摆动平面角速度的变化或重力计的示数变化反映出来。

A new analytic model of unsteady oil film forces is used to study the bifurcating and chaotic behavior of rotor systems is obtained.

本文讨论了转子系统的一个新的短轴承非稳态油膜力模型，这是一个分段光滑的模型，通过数值模拟，得到了该系统随转动角速度变化产生的分岔和混沌特性。

Comparing with existing solutions, new method can utilize generators' speed signal measured by wide area measurement systems directly and detailed model and parameter of power system components were not needed. After sphering measurement-data, ICA with maximal negentropy criterion was carried out to obtain feature matrix. By this means high-dimension data of multi-machine perturbed trajectories were reduced to lower dimensions, and coherent generator groups were identified by pattern recognition consequently. Simulation results of 36-bus system with 8-generator and planning northwest China 750 kV power grid show that noise signals and bad data can be eliminated. This method is accurate in identifying coherent generator groups.

与现有方法相比，这种方法不需要获得系统元件模型和参数，而是直接球化广域测量系统(wide area measurement systems，WAMS)提供的发电机电角速度信号，再利用最大负熵准则进行独立分量分析得到特征矩阵，将高维数的多机受扰轨迹数据变换到低维空间，通过模式识别得到分群结果。8机36节点系统和西北750 kV电网规划系统算例表明，该方法能有效消除噪音和坏数据的影响，准确识别出同调机群。

It basically consists of a ring cavity around which there are two laser beams traveling in the opposite direction, one clockwise and the other counterclockwise, and the beat note of the two counter propagating beams is proportional to the rotation rate of the ring cavity relative to an inertial frame.

其原理是在环形谐振腔内运行着顺逆两束激光，这两束光的频差与外界的角速度成正比。

The declination axis is set on the two ends of the inner frame in east-west direction.Using a hand-operated screw adjusting mechanism,the angle between the receive plane and the right ascension axis is controlled to be equivalent to the latitude every day.Tracking time is limited from 7 am to 5 pm,the concentrating area is 10 m~2,and the driver power is only 12 W.

自行设计了双轴调节太阳跟踪装置，其特征在于通过南北向布置的赤经轴按时钟角速度转动，同步带动一个挂在赤经轴两端的内框转动，在内框的东西框边的赤纬轴上安装有接收面支架，由手动螺旋调节机构调节接收面支架的平面与赤经转轴的夹角每天等于赤纬度。

Each cell corresponds to a region of space that is the size of a giant molecular cloud and moves with the same tangential velocity v. The angular velocity is given by , where r is the distance of the ring from the center of the galaxy.

每个细胞相当于一个区域的空间，这是一个巨大的规模和行动分子云与同切向速度诉角速度给出了，其中r是距离环的中心银河。

At last,the conclusion that the drift angle of satellite photography should be corrected to improve the stereo overlap of three-line array images is drawn.

当卫星绕地球运转时，由于地球自转角速度的影响，使得相机相对被摄景物的移动方向与相机星下点线速度方向不一致，从而存在偏流角。

The main technical parameters which decide the movement speed are the ankle angle of the support leg, the horizontal velocity, the hip angle and the support leg's hip joint angle, knee angle and the former support distance at the moment of contact, and the latter leg's hip joint angle, the upper arm's movement scope, the support leg's knee angle, the swing knee's angle, the support leg's hip angle at landing phase, and the ankle angle, the support leg's hip angle, the swing velocity of the former leg, the hip angle of the swing leg and the angle of the landing knee at the pushing phase.

我国优秀男子百米途中跑着地瞬间对动作速度起主要贡献的技术指标是：支撑腿的踝关节角、着地瞬间脚的水平速度、大腿夹角及支撑腿的髋角、膝角和前支撑距离；垂直缓冲瞬间是摆动腿髋关节角、上臂前摆幅度、支撑腿和摆动腿膝关节角、支撑腿髋关节角；后蹬瞬间是踝关节角、支撑腿髋关节角、大腿前摆角速度、摆动腿的髋角及支撑腿膝角。

From the F-16's corner speed up to the design airspeed limit (the vertical line at the right hand side of the limit curves) of the two airframes, turn rate and radius are in lock step for both aircraft.

两者锁定的步骤中从F-16的角速度到由两者的结构，盘旋率和半径限制的空速，F-16的空速略微的超过MIG-29，不过发挥这种优点似乎是困难的。

The design of yaw rate tracking control system a rchitecture by using μ synthesis robust control is presented and the weight ing f unctions are selected.

车辆总是承担不同的载荷，车辆建模亦存在着误差，传统四轮转向控制器难以达到原有的性能指标；针对外界干扰，采用μ综合鲁棒控制方法，构造横摆角速度跟踪综合控制系统设计框架，选取了不同环节的权函数。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。