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单词 pulser
释义

pulsern.

Brit. /ˈpʌlsə/, U.S. /ˈpəlsər/
Origin: Formed within English, by derivation. Etymons: pulse v., -er suffix1; pulse n.2, -er suffix1.
Etymology: Partly < pulse v. + -er suffix1, and partly < pulse n.2 + -er suffix1. With sense 1 compare pulsometer n. 3.
1. English regional. = pulsometer n. 3. rare.
ΘΚΠ
society > occupation and work > equipment > metalworking equipment > [noun] > forging equipment > bellows > types of
Hessian bellows1705
piston bellows1850
pulsera1903
pulsometera1903
a1903 J. Turner in Eng. Dial. Dict. (1903) IV. 645/1 [N. Staffordshire] Pulsometer. Also in form pulser. A large machine similar in principle to a pair of smithy bellows, but worked by a steam-engine, used to ensure a steady blast in a forge or furnace.
2. A device that generates pulses, esp. of electricity.
ΘΚΠ
the world > matter > physics > electromagnetic radiation > electricity > voltage > [noun] > pulse, surge > device generating
pulser1947
the world > matter > physics > electromagnetic radiation > electricity > electric current > flow of electricity > [noun] > pulse, surge > device generating
pulser1947
1947 J. V. Lebacqz & M. G. White in L. N. Ridenour Radar Syst. Engin. x. 373 Successful hard-tube pulsers have been made with power outputs up to 3 or 4 Mw.
1973 Sci. Amer. June 47/1 The resolution time, or fastest shutter time, of this type of gate is determined by the shortest duration provided by an electrical voltage pulser.
1986 W. L. Schweber Integrated Circuits for Computers xii. 344 The test instrument which complements the logic probe is the logic pulser.
2002 T. Carnwath & I. Smith Heroin Cent. ix. 186 They would carry an ultrasound pulser, which could be a device like a wristwatch.
3. A machine for producing mechanical pulsation in a liquid.
ΘΚΠ
the world > matter > physics > mechanics > dynamics > fluid dynamics > [noun] > devices for producing specific effects
water tunnel1799
pulser1954
fluid amplifier1960
1954 R. Stephenson Introd. Nucl. Engin. ix. 334 Until satisfactory pulsers are developed..it is doubtful that pulse columns will find any extensive use except for very special solvent extraction operations.
1967 Industr. & Engin. Chem. Process Design & Devel. 6 480/1 Pulsers employing air pressure..are very simple mechanically.
This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).
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n.a1903
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