| 单词 | periodic movement |
| 释义 | periodic movement (once / 311035 pages) n WORD FAMILY periodic movement: periodic movements USAGE EXAMPLESPeru's geological agency Ingemmet recorded some 536 quakes, about 20 an hour, on February 22 and 23 and periodic movement is ongoing. Reuters(Feb 26, 2013) Some show evidence of periodic movement — a very un-lichen-like trait. Scientific American(Dec 13, 2012) In each case, every periodic movement of the apparatus illustrates the whole energy operation. Weir, James, The Energy System of Matter—A Deduc...(2011) n motion that recurs over and over and the period of time required for each recurrence remains the same Syn|Hypo|Hyper periodic motion 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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