長秒針 的英文怎麼說
中文拼音 [zhǎngmiǎozhēn]
長秒針
英文
central second hand-
Horology. dimensions of rollers for sweep seconds
鐘表業.長秒針滾柱尺寸This paper gives a time - synchronization technique bases on gps time service signal which is used in broad band seismic recorder 。 by world coordination time offered by gps - - utc ( usno ), adjust local clock base on gps signal, gain high nicety clock signal, clock precision reachs 10 - 6 。 this clock is the time source of broad band seismic recorder, bring the whole seismic recorder works in same time base. 1pps time base with high stability can be used as in - phase, spring, time and start - stop of every collection mode, while the scale under second make a precise time mark to receive data of broad band seismic recorder
針對接收機中gps信號的噪聲進行kalman濾波軟體處理， kalman濾波可以對gps信號與本地晶振時鐘的時差數據在大噪聲中進行平滑，在較短時間內估計出高精度的時差數據。系統消除了gps秒脈沖信號的ms級隨機誤差，把晶振秒脈沖的長期穩定度鎖定到gps信號的穩定度上;在gps信號失效時給出了可行措施，能夠保證在任何情況下產生一個穩定、高精度秒脈沖信號，誤差在1 s內。As hands of clocks keep running day and night, the sun and the moon work according to schedule. the children have grown along with seasonal changes
時鐘的時針、分針和秒針每天不停轉動；太陽伯伯和月亮姐姐每日隨著時間的轉變而上班下班；春夏秋冬在更替之際，小朋友亦不斷長大。
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