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- International Polar Motion Service 国际极移服务
- International Polar Motion Service (IPMS) 国际极移服务
- polar motion service 极移服务
- For the tidal variations in the earth's rotation and polar motion, diurnal and subdiurnal zonal tide terms are considered in the Conventions. 关 于地球自转和极移中的潮汐变化，规范列出了周日和半日潮的带形部分。
- In the paper,the authors analyzed polar motion data series recently released by IERS,and in combination with spectrum resolution,discussed two frequency of Chandler wobble. 分析了IERS新近公布的经统一归算的极移数据,结合频谱分析中分辨率的有关问题,进一步讨论了Chand ler摆动的双频现象。
- First, the trend,annual and semi-annual terms are removed by the least-square fitter from theSPACE98 time series which describes the polar motion of the Earth, the maincomponent in the resulted new series is the Chandler Wobble. 首先利用SPACE98数据，去掉其趋势项、周年项后，得到主要含Chandler项的激发序列；
- The theoretical analysis shows that periodic forcing onlyexcites the polar motion with the corresponding period, and stochastic motion is oneexciting source with the best probability for the Chandler Wobble. 理论分析表明：周期性强迫运动只能激发与其周期相一致的极移运动，随机运动是Chandler摆动最主要的激发源。
- The complex eigen-period period and Q value of the FCN are evaluated based on the resonance observed in the diurnal tidal gravity, the gravity change due to the polar motion is also studied. 根据地球自由核章动在周日重力潮汐观测中的共振效应确定了自由核章动的复本征周期和品质因子Q值，研究了极移重力效应；
- The motion of the celestial ephemeris pole with respect to the spatial frame is called nutation (including precession),and that with respect to the terrestrial frame is called polar motion. 通过引进章动坐标系相对惯性参照系的转动角速度随时间的变化,导出了一个可同时解出章动和极移的地球自转方程,用这个方程可同时研究地球的强迫和自由转动。
- The two systems of government are polar opposites. 这两种政体正好相反。
- reverse and positive movement of polar motion 极移的正、反向运动
- A 10% service charge is added on to the bill. 帐单上包括了百分之十的服务费。
- The typewriter is at your service. 这台打字机随便你使用。
- Time-variation of periodic components of polar motion amplitude 极移振幅主要周期分量的时变特征
- Theoretical Approach to Polar Motion of 7-month-period 7个月周期极移的非线性动力机制
- Most insect do not live in polar region. 大多数的昆虫不在极地地区生存。
- A new bus line has been brought into service. 开辟了一条新的公共汽车线。
- It is this molecular motion that we call heat. 就是这种分子运动我们称之为热。
- Its slow service gave the restaurant a bad name. 这家餐馆因缺乏效率的服务搞得名声很坏。
- The meeting carried the motion by a large majority. 会议以多数通过了这项提议。
