nutation

In some liquid filled spinning systems, although top stability conditions of frozen liquid are satisfied theoretically, and the top nutation is not of resonant instability due to liquid inertia wave, angular motion of the rotating liquid filled system is not stable in experiments.

一些旋转充液系统，尽管理论上满足固化液体系统的陀螺稳定性条件，并且也不在章动与液体惯性波的共振区域内，但是在实验时系统却出现运动不稳定。

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A Theoretical Improvement on Wobble and Nutation of Fluid Core Earth Model

液核地球极移和章动理论模型的改进

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The on-orbit result showed that the gird registration of clouds imaging for FY-2C satellite was better than 1 visible pixel, and the nutation angle and swing angle met the requirements for design.

飞行试验结果表明，C星的云图网格配准精度优于1个可见像素，章动角和摇摆角也符合设计要求。

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In this paper, some deficiencies in nutation theory are discussed.

本文讨论了IAU章动理论的某些缺陷.

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Nutation sequence of the rigid Earth determined by expansion of precise tidal generating potential

应用精密引潮力位展开建立刚体地球章动序列

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The international research progress of the non-rigid Earth nutation is reviewed briefly.

对目前国际上有关 非 刚体地球章动研究的进展作了简要回顾.

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This paper presents the basic construction and movement rules of the coordinator gyrorotor with reticle of Archimedes spiral reticule pattern, Also, it explains the principles and methods of dynamical balance to damp the vibration and forced nutation.

阐述了具有阿基米德螺旋线图案的位标器的基本原理及其运动规律，并说明这种陀螺转子的振动与绕动的平衡原理与方法。

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On the basis of the whole construction of the reducer, the 3D modeling and virtual assembly for nutation drive have been completed in Solidworks system.

在章动传动减速器的总体结构设计的基础上，进一步完成了基于Solidworks系统的双圆弧螺旋锥齿轮章动传动减速器实体的三维建模和整机虚拟装配。

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Theory Research on Output Mechanism of Conical Roller in Nutation Gear

章动齿轮传动锥滚式输出机构的理论研究

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J 2 perturbation makes the relative orbit drift in the in track direction , nutation or procession.

J2摄动对相对轨道的影响分为相对轨道构形的漂移 、 相对轨道平面的章动和进动.

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Consisting of or causing a climax. Deduction from Moment of Precession and Nutation Considering High Step Tidal Generating Potential of Solar and Luner

形成高潮或者引起高潮。顾及日月高阶引潮力位的岁差章动力矩的推导

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Influence of elasticity of cardan gimbals on Nutation drift of gyroscope

万向支架弹性对陀螺仪章动漂移的影响

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Several different kinds of mechanical methods such as celestial rotation, tidal force, precession and nutation, etc as well as its corresponding gravity convergence shape and movement characteristics by gravity are discussed.

即研究天体表面物质所受到的重力指向天体中心点的集合所形成的形状。深入讨论了几种不同性质的力学方式如天体自转、引潮力、进动及章动等，所对应的重力收敛特性、。

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In this paper, some deficiencies in IAU nutation theory are discussed.

本文讨论了IAU章动理论的某些缺陷.

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Based on classical dynamical equation on rotation of fluid core Earth, a associated dynamical equation containing both nutation and wobble of Earth rotation have been deduced through introducing motion of nutation frame system with respect to inertial spatial frame.

以经典的液核弹性地球自转动力学理论为基础，通过引入章动坐标系相对惯性空间的运动，建立液核地球极移和章动的联合动力学方程。

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In the scheme the effects of nutation motion on attitude was considered and all telemetry information was simulated on requirements for accuracy and real-time processing with microcomputer under actual process Of tracking, telemetry and command of satellite.

该方案考虑了卫星章动运动对姿态的影响，根据实时性和精度的要求，模拟卫星实际测控过程，对各种遥测量进行了仿真。

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Theoretical deduction shows that precession-nutation moment induced by odd order tidal generating potential causes out of phases of longitude and obliquity nutation ( namely, there are cos term in longitude nutation, but sin term in obliquity nutation).

通过推导发现，奇数阶引潮力位产生的岁差章动力矩使得黄经章动和交角章动出现了异向项（即：黄经章动出现了cos项，交角章动出现了sin项）。

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The target imaging sensor of seeker in an image guidance system is directly stabilized by gyro, hence the image stabilization and guidance performance are affected by vibration and nutation cased by dynamical unbalance of gyro rotator.

图象制导系统导引头的目标成象传感器是由陀螺直接稳定的，陀螺转子运动不平衡引起的振动与绕动直接影响到图象的稳定及整弹性能。

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People who have this nutation mutation need less sleep than others.

有这种变异基因的人睡到比别人少.

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As the increase of motor size and the time of motor operation, the spin stabilized solid rocket propelled space vehicles performed the unpredictable nutation instability.

自旋稳定固体火箭发动机飞行器随着发动机尺寸的增大，工作时间的增长，在发动机工作末期出现了不可预见的不稳定性运动。

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The 2K-H nutation mechanism of gear roller mesh is applied to the reducer which drive a petroleum exploitation screw pump under ground. A new nutating reducer was designed and manufactured, and through the test, satisfied result was acquired.

将齿滚啮合的2K-H型进动机构应用于井下驱动螺杆泵采油系统的减速器中，设计、制造出一进动式减速机，并在实验台上进行了测试，结果满足要求。

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By observing the periods of the target length variant, the frequency of nutation is deduced.

通过观测一维像序列的长度变化周期，提取目标的章动频率；

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But keep at in mind that the scientists say this nutation mutated gene may be rare.

但记住科学家说的,这种突变基因是非常稀少的.

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This person says: " Do nutation only later and lie, not more was saved? "

这人便说: “ 以后只做垂头而卧的, 不就更省了 吗 ? ”

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In this paper, the changes in time and latitude determinations caused by using FK5, new astronomical constants, new nutation series are discussed.

本文讨论FK5、新岁差常数，新章动理论的采用引起测时测纬结果的变化。

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Study was conducted on the change of fresh weight, moisture and the aril total-sugar of logan before and after the fruit cluster nutation by choosing the extremely serotinous variety-Lidongben.

以晚熟龙眼品种立冬本为试材，研究了果穗垂头前后果实鲜重、各组织的水分及假种皮总糖的变化。

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People who have nutation this mutation need less sleep than other'sothers.

有这种变异基因的人们比常人少眠.

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A parameter design method of nutation cross-feedback control is investigated.

研究了章动交叉反馈校正的参数设计方法.

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This paper is very importance to more studying theory of the inner core Earth's nutation, in view of influence of higher order moment of precession-nutation to the Earth rotation.

本文的理论对进一步研究在高阶岁差章动力矩作用下的内核地球章动是非常有意义的。

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