“persistence”的概念、定义、翻译、参考文献-科学参考

单词	persistence
释义	persistence [pǝr`sis·tǝns] ^ELECTRONICS 1. A measure of the length of time that the screen of a cathode-ray tube remains luminescent after excitation is removed; ranges from 1 for short persistence to 7 for long persistence. 2. A faint luminosity displayed by certain gases for some time after the passage of an electric discharge. ^METEOROLOGY With respect to the long-term nature of the wind at a given location, the ratio of the magnitude of the mean wind vector to the average speed of the wind without regard to direction. Also known as constancy; steadiness.
随便看	tracking error tracking filter tracking jitter tracking network tracking problem tracking radar tracking station tracking system tracking telescope track in range track-laying vehicle trackless mine trackless tunneling track made good track pitch track-return power system track shifter track telling track-to-track access time track-while-scan traction tractional force traction diverticulum traction meter traction tube

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