| 单词 | natural period |
| 释义 | > as lemmasnatural period natural period n. Physics the time in which a freely oscillating system completes one cycle of oscillation. ΚΠ 1870 Proc. Royal Soc. 19 106 When a mass of air or other gas is enclosed in a space bounded nearly all round by rigid walls, but communicating with the external air by one or more passages, there are certain natural periods of vibration. 1894 Philos. Trans. (Royal Soc.) B. 185 281 In an unloaded shaft, the period of whirl coincides with the natural period of lateral vibration. 1908 C. C. F. Monckton Radio-telegr. ii. 36 For different circuits, as long as the oscillation constants are the same the natural periods of vibration are the same. 1955 M. Hollander tr. P. H. Kuenen Realms of Water ii. 42 The tidal movements in the Malay Archipelago are very singular indeed..involving highly complicated reflection of the waves and resonances in the separate basins with natural periods of oscillation. 1994 D. S. L. Cardwell Fontana Hist. Technol. iv. 92 The pendulum, with its natural period determined only by its dimensions and by gravity, replaced the foliot and balance weights to regulate the weight-driven clock. < as lemmas |
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