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单词 mercury pump
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mercury pump
mercury pump n. an air pump that makes use of mercury, spec. (a) = Sprengel pump n. at Sprengel n. 1a; (b) = mercury vapour pump n.
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1869 W. Airy (title) The spiral pump applied as a force pump, a suction pump, or a mercury pump.
1873 E. Atkinson tr. A. Ganot Elem. Treat. Physics (ed. 6) 147 Morren's mercury pump..a mercurial air pump.
1936 Discovery Dec. 365/2 The invention of the mercury pump led to many important discoveries.
1971 R. S. Foley Ball Bearing Design for Snap-8 9 The mercury pump operates at 7800 rpm with 400 Hz, 120/208-volt, three-phase input power.
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