| 单词 | precession |
| 释义 | precession noun[U] physicsspecializeduk/prɪˈseʃ.ən/us/prɪˈseʃ.ən/theslowandcontinuouschangein therotation(=movementaround afixedpoint)of aplanet,star, etc. that isspinningaround anotherplanet,star, etc. （行星的）进动Astronomy
Examplesofprecessionprecession Precessionrates from 0 to 80rev/min were attainable, measured by timing several revolutions of the table. From theCambridge English Corpus Experiments were performed forprecessionrates spanning the range of validity of the theory. From theCambridge English Corpus Secondary motion is imposed upon the primary rotation of the liquid by the relativeprecessionof the top. From theCambridge English Corpus A fluid contained in a rotating cylinder has an inertial mode which is excited by forcedprecessionof the container. From theCambridge English Corpus Although this age for the paleolakes is geologically recent, several thousand obliquity cycles and 104 climaticprecessioncycles have passed since then. From theCambridge English Corpus This section investigates the main planetary system properties that control orbitalprecessionrates. From theCambridge English Corpus This situation obviously changes during the course of a climaticprecessioncycle and there are repeatedly epochs during which the southern hemisphere becomes more clement. From theCambridge English Corpus The model to be described here predicts the temporal evolution of the annual maximum surface temperature at all grid points through one recentprecessioncycle. From theCambridge English Corpus The reason for this result was assumed to be the global elevation difference, which is sufficient to keep the global circulation pattern invariant with respect to theprecessioncycle. From theCambridge English Corpus Fig. 7 shows the model results for three representative epochs within aprecessioncycle. From theCambridge English Corpus A numerical simulation of the variation of the annual maximum surface temperature and soil water content near the surface has been carried out for the last climaticprecessioncycle. From theCambridge English Corpus Apart from some minor incidents and inconvenience to traffic, this self-disciplinedprecessiongave the police no real cause for concern. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 About 5,000 years ago the ancient astronomers were able to do remarkably detailed numerical calculations from which, for example, they evaulated theprecessionof the equinoxes. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0 Because ofprecession, the positions of the constellations slowly change over time. From Wikipedia  This example is from Wikipedia and may be reused under a CC BY-SA license.Gyro stabilizers consist of a spinning flywheel and gyroscopicprecessionthat imposes boat-righting torque on the hull structure. 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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