| 单词 | periodic motion |
| 释义 | periodic motion (once / 909178 pages) n WORD FAMILY periodic motion: periodic motions USAGE EXAMPLESPeriodic motion and wave characteristics have been removed, save for the potential energy of a spring-block system. US News(Oct 27, 2015) Pi appears most often in formulas involving circles or periodic motion, and it infiltrates some fundamental physical constants. Scientific American(Jul 21, 2012) The cause of the second inequality, or apparent periodic motion of the stars, Bradley made out to be a nodding motion of the earth's axis. Lodge, Oliver, Sir, Pioneers of Science(2010) n motion that recurs over and over and the period of time required for each recurrence remains the same Syn|Hypo|Hyper periodic movement harmonic motion a periodic motion in which the displacement is either symmetrical about a point or is the sum of such motions simple harmonic motionperiodic motion in which the restoring force is proportional to the displacement motion, movement a natural event that involves a change in the position or location of something |
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