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单词 impulse clock
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impulse clock
impulse clock n. a secondary clock operated by electrical impulses transmitted at regular intervals by a master clock.
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the world > time > instruments for measuring time > clock > [noun] > secondary clocks
journeyman1904
impulse clock1923
impulse dial1931
1923 H. R. Langman & A. Ball Electr. Horol. v. 82 Clocks coming under this section are generally..designated as dials, impulse clocks, secondary clocks, journeyman clocks, sympathetic clocks, or step by step movements.
1951 S. J. Wise Electr. Clocks (ed. 2) iv. 67 An impulse or repeater clock is a device which receives the timed electrical impulses transmitted by a master clock, and translates them, through its wheelwork, into seconds, minutes and hours.
extracted from impulsen.
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