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单词 impulse dial
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impulse dial
impulse dial n. see impulse clock n.
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the world > time > instruments for measuring time > clock > [noun] > secondary clocks
journeyman1904
impulse clock1923
impulse dial1931
1931 F. Hope-Jones Electr. Clocks ii. 6 Circuits of electrical impulse dials, in which a master clock transmits impulses every minute or half-minute to propel the hands.
1940 F. Hope-Jones Electr. Timekeeping i. 6 After many years of futile attempts to apply electricity to horology, inventors turned their attention to systems of electrical impulse dials, an obviously sane and effective method of indicating uniform time throughout a large building.
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