| 释义 |
ˈair-pump
[air- 7.]
A machine for exhausting the air out of a vessel by means of the strokes of a piston. (Formerly called Pneumatic Engine and Wind Pump; subsequently used in steam engines.)
1660Boyle New Exper. i. (1682) 4, I put Mr. G. and R. Hook to contrive some Air-pump that might not like the other need to be kept under water. 1664Power Exp. Philos. ii. 121 That excellent Tractate of Experiments of Esq. Boyle's, with his Pneumatical Engin or Ayr-pump. 1692Bentley Boyle Lect. viii. 284 Exhausted Receivers of Air-pumps. 1711Addison Spect. No. 21 ⁋7 For want of other Patients [they] amuse themselves with the stifling of Cats in an Air-Pump. 1728Young Love of Fame v. (1757) 126 Like cats in air-pumps, to subsist we strive On joys too thin to keep the soul alive. 1802Trevithick & Vivian Brit. Pat. 2599 In the steam engines constructed and applied according to our said Invention..we use a new method of condensing by an injection above the bucket of the air pump. 1812Sir H. Davy Chem. Philos. 26 Otto de Guericke of Magdeburgh invented the air-pump. 1875Encycl. Brit. I. 429/2 Air-pump, in steam-engines, is the pump which draws the condensed steam, along with the air which is always mixed with it, and also the condensing water..away from the condenser, and discharges it into the hot well. |