| 单词 | töpler pump |
| 释义 | > as lemmasTöpler (or †Töpler's) pump Töpler (or †Töpler's) pump: a pump in which the reservoir to be evacuated is connected by a glass tube containing a valve to a second reservoir, which in turn is connected by a flexible U-tube to a reservoir of mercury, so that lowering the last draws gas out of the first reservoir into the second and raising it expels gas from the second reservoir into the atmosphere. Also absol. ΘΚΠ the world > matter > physics > mechanics > fluid mechanics > [noun] > suction > specific vacuum pumps Töpler (or Töpler's) pump1883 1883 Encycl. Brit. XVI. 31/1 In Töpler's pump this is attained by using..for the inlet and the outlet vertical capillary glass tubes. 1922 R. Glazebrook Dict. Appl. Physics I. 8/1 The working of a Töpler by hand is extremely tedious, for several hours may be required to reach the limit of pressure. 1932 Proc. Royal Soc. A. 135 514 A continuously operating Sprengel pump..removed the gas from that part of the apparatus..and delivered it, without loss, into the Töpler pump. 1976 A. Roth Vacuum Technol. v. 201 With the Toepler pump, pressures down to 10−5 Torr can be obtained, except the mercury vapour pressure which is about 10−3 Torr. < as lemmas |
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