英语释义

• (astronomy) a real or apparent slow oscillation of a moon or satellite;

  "the libration of the moon"

片语

oscillation振蕩；振动；摆动

libration physique物理天平动

lunar libration月球天平动

Libration Libation天平之奠

vibration振动；犹豫；心灵感应

true libration[天]

libration deviation[天]

libration effect[天]

daily libration日天平动

optical libration[天]

libration tester测振仪

英汉例句

• by the calculation, the primal fault of the sucker rod, the libration of the sucker rod and the centrifugal force are the main cause of sucker rod deviating-fraction.

  由计算知，桿柱的初始缺陷、桿柱振动及离心力是造成抽油桿柱偏磨的主要原因。

• this article summarized some aspects of libration feeder「s design installation modification and application in tongkeng coarse tin ore separated project.

  对振动给料机在铜坑矿粗粒抛废工程中设计、安装、改进和生产应用的情况进行了综述。

• 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。

• especially, the author researches the coupling libration of water and dam detailedly.

  特别对库水与坝体耦合振动问题进行了详细的阐述。

• 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。

• low energy cost transfer between libration points and planets can be achieved by using invariant manifold.

  利用不变流形能够实现平衡点与行星之间的低能耗过渡；

• this paper analyzes some kinds of methods for voltage reference self-ca libration system and explains them one by one.

  对几种电压标準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。

• libration points are not only ideal locations for observing the sun and the environment, but also perfect gateways for the interplanetary exploration.

  平动点不仅是对太阳活动和空间环境进行科学探测的最佳位置，而且也是人类进行星际探测的极佳枢纽。

• transfer trajectory design and optimization for libration point missions is studied systematically.

  系统地研究了平动点任务转移轨道设计与控制问题。

• 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。

• affected by the women」s libration and the development of the women「s literature, now the study on the ancient women」s literature is one of the important topics in the literary world.

  受到西方妇女解放运动和女性文学的影响，中国女性文学研究逐渐成为当今学术领域一个重要的话题。

• 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。

• the libration characteristic of the commercial engine parts is in great importance because of the libration and noise in the idle speed and working process.

  商用车发动机在怠速和工作中会产生较大的振动和噪声，分析其相关零部件的振动特性就显得尤为重要。

• orbits of this type can be positioned near collinear libration points, and for simplicity it is adequate to take linear terms into consideration in the control process.

  这种类型的轨道可以离共线平动点较近，那么只需要在控制过程中考虑线性项即可，控制条件简单。

• first carry on the self libration analysis to the bridge, use spatial four nodes elastic shell element shell63 and spatial two nodes elastic beam element beam44 to model the bridge.

  首先对大桥进行自振特性分析，分别采用空间四节点弹性壳单元shell63和空间二节点弹性梁单元beam44单元进行建模。

• after the libration stopped, the varied silt soil will transform to the original state.

  这些现象表明：土体状态并不随振动的持续进行而发生连续变化。

• 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。

• 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。

• in this dissertation, low energy trajectory design and optimization for collinear libration point missions is studied.

  本文对共线平动点任务节能轨道设计与优化进行了研究。

• 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。

• software for low energy trajectory design of libration point missions is developed.

  研制了具有自主知识产权的平动点任务节能轨道设计软件。

• the software supports low energy trajectory design of libration point missions, data reports, and visualization. the software also has the user-friendly graphical user interface.

  软件可以支持日地和地月系统平动点任务轨道设计，且具有数据报告和可视化等功能，具有友好的图形用户界面。