libration

1. Chaos and its control in the planar libration of a magnetic rigid spacecraft with internal damping in an elliptic orbit are investigated.
   研究在具有内阻尼的磁性刚体航天器在椭圆轨道上平面天平动的混沌及其控制。
2. The particles of slag powder processed by libration mill were mostly in ball and its surface was the most smooth.
   振动磨所加工的矿粉颗粒大多呈圆形，表面最光滑。
3. Through optimizing design to fulfill strong steel structure, and to ensure the machine weaving abb with high speed, strong power and small libration.
   通过优化设计而实现的高钢性机架构造，保证了织机高速、强劲、低振动的稳定打纬。
4. Most of the precision apparatus tests usually need low wind speed, low libration and fine temperature uniformity.
   精密仪器往往要求低风速，低震动和高精度温场。
5. The collinear libration point L2 of the earth-moon system plays an important role in exploration of the back of the moon for its relatively fixed position with respect to the earth and the moon.
   地&月系共线平动点L2相对地球和月球不变的空间位置使得它在月球背面探测任务中起着十分重要的作用。
6. Applications of the Triangular Libration Points in Deep Space Explorations
   ph.1.三角测量点三角平动点在深空探测中的应用前景
7. Two impulses transfer trajectory design for Sun-Earth libration point missions
   日地平动点卫星两脉冲转移轨道设计
8. In succession, the author educed movement differential equation of reed valve plate from differential element of the plate according to theory of elastic plate libration.
   接着本文根据弹性薄板振动理论，由薄板的微元体导出簧片阀阀片的运动微分方程。
9. Libration point orbits have the important applications in deep space exploration, and have been paid more attentions from all over the world.
   平动点轨道在深空探测领域具有重要的应用价值，引起了国内外航天界的密切关注。
10. Owing to the phenomenon of libration it is possible to observe up to 60% of the total lunar surface.
    由于天平动的现象，我们可能观测到月球总面积的60%。
11. Development Report on Noise Libration& Control Industry of China in 2008
    我国噪声振动与控制行业2008年发展综述
12. Overview of Orbital Dynamics and Control for Libration Point Orbits
    平动点轨道的动力学与控制研究综述
13. By these judging conditions, the effects on the linear stabilities of the triangular libration points in the classic restricted three-body problem with drag are discussed. Some Murray's results are improved.
    用这些判断条件，讨论了一些阻力对经典限制性三体问题三角平动点线性稳定性的影响，改进了Murray等的一些结果。
14. Current laser engraving adopt holophote optical circuit or libration mirror.
    目前的激光雕刻机均使用振镜扫描式和全反射镜式进行工件加工。本文提出采用传能光纤组成的光路系统代替原来的光路系统。
15. The pressure sensor selects the sensor of good aseismatic performance and upper sensitivity, which may conquer adverse factors of big libration weak stability and improve sensitivity;
    在传感器选取中，压力传感器选取了耐振性能好、有较高灵敏度的BHR-1型压力传感器，克服了小型发动机工作时振动较大，稳定性差等不利因素的影响，提高了灵敏度；
16. The research on simulation of virtual prototype and experiment to the libration system of automobile
    汽车振动系统的虚拟样机仿真及试验研究
17. The paper discusses the design ideology, working principle and structure characteristic for the colour sorter for raisin, it discusses electromagnetism libration principle in the feed system and the face CCD in optical system-and puts forward a new kind of sorting setting: electromagnetism shutter.
    本文论述了葡萄干颜色分选机设计思想及其工作原理和结构特点，并探讨了供料系统中电磁振动原理及光学系统中的核心元件面阵CCD，提出了一种新型的分选装置：电磁快门。
18. This paper analyzes some kinds of methods for voltage reference self-ca libration system and explains them one by one.
    对几种电压标准自校系统方法进行了分析探讨，并对它们逐个作了研究说明。
19. To improve reliability of anti-abominable environment electronic equipment, this paper discusses the design to defend the climate and environment, the heat, and the libration, etc.
    该文就提高抗恶劣环境电子设备可靠性的技术，如对气候环境防护设计、热设计、缓冲减振设计等技术进行了探讨。
20. The Research on Data Processing Monitor Network System of Shipping Libration
    船舶振动数据采集监测网络系统的研究
21. The concept of controlling electrical machinery libration and noises in the process of electrical machinery maintenance is first presented in the paper.
    本文第一次提出了电机维修过程中也应控制电机振动及噪声的概念。
22. Some judging conditions for the linear stability of the libration points in the perturbed restricted three-body problem are given. These conditions only depend on the coefficients of the characteristics equations of their tangent maps and are applied expediently.
    给出了受摄限制性三体问题平动点线性稳定性的一些判断条件，条件只与相应的平动点切映像的特征方程系数有关，使用方便。
23. Varying regularity of libration period on overweighted compound pendulum was obtained by theoretical reasoning? research and analysis.
    通过理论推导、研究和分析，得出了加配重复摆振动周期的变化规律。
24. Along with the demand and development of shipping industry the noise libration has become an issue which can not be ignored.
    随着国内外船舶工业的需要和发展，噪声振动已经成为一个不可忽略的问题。
25. In this paper the way of static condensation is used to eliminate the other displacement couplinged with the vertical displacement and get the characteristic matrix equation of the vertical libration.
    并对在该模型下建立的动力矩阵用静力凝聚法进行简化，消去与竖向位移耦联的其它位移，分离出关于竖向振动的特性矩阵方程；
26. Analyse membrane performance with thin plate libration theory, establish the nonlinear relation between center flexibility and electrostatic force and the calculation formula of first-order inherent frequency;
    用薄板振动理论分析了泵膜的性能，建立了薄膜中心点挠度与静电力的非线性关系以及薄膜一阶固有频率的计算公式；
27. On Characteristics of Collinear Libration Points and Their Applications in Deep Space Exploration
    关于共线平动点的特征及其在深空探测中的应用
28. The research and application of the symplectic algorithm for nonlinear optimal control. ( 1) For the nonlinear trajectory optimization requirement of spacecrafts formation reconfiguration near the libration, the symplectic algorithms for nonlinear optimal control are proposed.
    非线性系统最优控制辛算法的研究与应用。（1）针对共线平动点附近轨道上航天器编队重构中非线性轨迹优化需求，提出非线性系统最优控制的辛算法。
29. Based on analysis of revolution and rotation of the moon, simplified calculation methods of the time of lunar eclipse and libration in longitude are proposed.
    在分析月球公转与自转运动的基础上，分别提出了月食发生时刻与经度天平动幅度的简化计算方法。
30. From the separation process of bearing fault signal, we can conclude that the method have good separation performance on linear instantaneous mixtures of non-stationary signal such as libration signal.
    通过对混合轴承故障信号的分离，可以看出该方法对于振动信号这样的非平稳信号的线性瞬时混合具有较好的分离效果。

noun

1. (astronomy) a real or apparent slow oscillation of a moon or satellite
   1. the libration of the moon