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chronometer    
n. 天文,航海用的精密时计,精密的时钟

天文,航海用的精密时计,精密的时钟

chronometer
n 1: an accurate clock (especially used in navigation)

Chronometer \Chro*nom"e*ter\, n. [Gr. ? time -meter: cf. F.
chronom[`e]tre.]
1. An instrument for measuring time; a timekeeper.
[1913 Webster]

2. A portable timekeeper, with a heavy compensation balance,
and usually beating half seconds; -- intended to keep time
with great accuracy for use an astronomical observations,
in determining longitude, etc.
[1913 Webster]

3. (Mus.) A metronome.
[1913 Webster]

{Box chronometer}. See under {Box}.

{Pocket chronometer}, a chronometer in the form of a large
watch.

{To rate a chronometer}. See {Rate}, v. t.
[1913 Webster] Chronometric

32 Moby Thesaurus words for "chronometer":
Big Ben, astronavigation, celestial navigation, clock,
clock movement, clockworks, coastwise navigation, consolan,
dead reckoning, fix, horologe, horologium, line of position, loran,
pilotage, plane sailing, point-to-point navigation, radar,
radio beacon, radio navigation, sextant, shoran, sofar, sonar,
tables, ticker, timekeeper, timepiece, timer, turnip, watch,
watchworks


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  • Chronometer watch - Wikipedia
    The term chronometer was coined by Jeremy Thacker of Beverley, England in 1714, referring to his invention of a clock ensconced in a vacuum chamber The term chronometer is also used to describe a marine chronometer used for celestial navigation and determination of longitude
  • Marine chronometer - Wikipedia
    The first true chronometer was the life work of one man, John Harrison, spanning 31 years of persistent experimentation and testing that revolutionized naval (and later aerial) navigation The term chronometer was coined from the Greek words χρόνος (chronos, "time") and meter (meaning measure)
  • CHRONOMETER Definition Meaning - Merriam-Webster
    The meaning of CHRONOMETER is timepiece; especially : one designed to keep time with great accuracy despite external forces How to use chronometer in a sentence
  • Chronometer | Uses, Watch, Ship, Marine, Time, Invented | Britannica
    Chronometer is a portable timekeeping device of great accuracy, particularly one used for determining longitude at sea
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