词汇 | semi-major-axis |
释义 | BETA semi-major axiscollocation in Englishmeanings of semi, majorand axisThese words are often used together. Click on the links below to explore the meanings. semi noun[ C ] uk /ˈsem.i/ us /ˈsem.aɪ/ one of the two games that are played to decide who will take part in the final game of ... See more at semi major noun[ C ] uk /ˈmeɪ.dʒər/ us /ˈmeɪ.dʒɚ/ an officer of middle rank in the British, US, and many other ... See more at major axis noun[ C ] uk /ˈæk.sɪs/ us /ˈæk.sɪs/ a real or imaginary straight line going through the centre of an object that is spinning, or a line that divides a symmetrical shape into two ... See more at axis Examples of semi-major axissemi-major axis From the perspective of the perturbation theory used in celestial mechanics to compute the evolution of the orbit, the semi-majoraxis is an adiabatic invariant. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For the special case of a circle, the semi-majoraxis is the radius. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The expressions below give the auxiliary latitudes in terms of the geodetic latitude, the semi-majoraxis, "a", and the eccentricity, "e". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This means that it is slightly flattened, its semi-minor axis being 70% of its semi-majoraxis. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This was possible due to large size of the planet and its small semi-majoraxis. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This form of the equation is particularly useful when dealing with parabolic trajectories, for which the semi-majoraxis is infinite. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The semi-majoraxis is known if the mean motion and the gravitational mass are known. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The two stars orbit each other with a semi-majoraxis of 1.437 arcseconds and a period of 116.24 years. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For any ellipse, let "a" be the length of its semi-majoraxis and "b" be the length of its semi-minor axis. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As the eccentricity of the orbit evolves, the semi-majoraxis of the orbital ellipse remains unchanged. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The semi-majoraxis is one half of the major axis, and thus runs from the centre, through a focus, and to the perimeter. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. To calculate a dynamical parallax, the angular semi-majoraxis of the orbit of the stars around each other is observed, together with their apparent brightness. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One is invariably the equatorial radius, which is the semi-majoraxis, "a". From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This central pair has a semi-majoraxis of around 867 km and a period of about 1.9 days. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The two stars orbit around their common centre of mass once every 78.7 years and the secondary has a semi-majoraxis of 0.165 arcseconds. 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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