| 单词 | pendulum observation | 
| 释义 | > as lemmaspendulum observation   pendulum observation  n. an observation made using a pendulum. ΚΠ 1826    G. B. Airy in  Philos. Trans. 		(Royal Soc.)	 116 573  				It is impossible to establish any agreement with the pendulum observations of Captain Sabine. 1909    Westm. Gaz. 14 Sept. 4/1  				Complete series of meteorological, magnetic, seismological, tidal, and pendulum observations were taken under great difficulties. 2000    Daily Tel. 		(Sydney)	 		(Nexis)	 14 Nov. (Features section) 43  				He [sc. Halley] had recorded the celestial longitudes and latitudes of 341 stars,..made many pendulum observations and noticed that some stars seemed fainter since being observed in ancient times. < as lemmas  | 
	
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