| 词汇 | libration |
| 释义 | libration noun[ U ] physics specializeduk /laɪˈbreɪ.ʃən/ us /laɪˈbreɪ.ʃən/ a slight backwards and forwards movement of something, especially of planets etc. in the sky: （行星的）天平动 lunar libration月球的天平动 Synonym oscillation Physics: particular theories & concepts aphelion azimuth conservation cryogenics dark matter Doppler effect emergence emergent kinetics momentum perihelion Planck's constant quantum refraction relativistic relativity spatio-temporal spring constant time dilation wormhole You can also find related words, phrases, and synonyms in the topics: Backwards, sideways and back and forth General words for movement Examples of librationlibration Ignoring the likely functionally uninteresting bond vibrations, the very shortest times are the fundamental group librations and rotations of methyl groups, which typically occur in the picosecond range. This can be simplified further by recognizing that local bond librations and other motions are likely to occur on very different timescales, and thus their averages can be computed independently. The visibility of this formation is affected by libration, and even under favorable conditions it is highly foreshortened. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. At this location the crater appears much foreshortened and can only be observed during favorable librations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As a result, spacecraft in libration point orbits must use their propulsion systems to perform orbital station-keeping. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. That is, the features that would produce a contour effect along the limb due to libration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It was the first artificial object placed at a so-called libration point, proving that such a suspension between gravitational fields was possible. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It can also become hidden from sight due to libration, or brought into a more favorably viewing position. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In this location the vicinity of the crater can be viewed during favorable librations, although it is viewed from on edge. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Due to its proximity to the western lunar limb, this area of the surface is occasionally visible during favorable librations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It lies just beyond the western limb, at the far edge of the region that is brought into view during favorable librations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The study was conducted inside the interval where libration happens. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In addition, to the extent that tides produce heat along fractures libration may affect the magnitude and distribution of such tidal shear heating. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Other observations suggest they move around the libration points in ellipses of about 6 by 2 degrees. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It can also become hidden from sight due to the effects of libration. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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