| 释义 |
▪ I. condensing, vbl. n.|kənˈdɛnsɪŋ|
see next.
▪ II. conˈdensing, ppl. a.
That condenses.
1. Chiefly in names of machines, mechanical apparatus, etc., forming virtual compounds (sometimes hyphened), in which it blends with the vbl. n. used attrib. (= ‘for condensing’), as condensing coil, condensing glass, condensing lens, condensing pan, condensing syringe, condensing valve.
1787G. Adams Ess. Microscope 84 There is also a condensing glass to the stage. Ibid. The tube with the condensing lense. c1790J. Imison Sch. Arts I. 189 The valve that admits the steam from the..cylinder into the condenser, called the condensing valve. 1816J. Smith Panorama Sc. & Art II. 25 The condensing syringe. 1835Ure Philos. Manuf. 349 A little tributary stream of the Mersey..supplies the condensing power to his steam-engines. 1865Wansbrough Specif. of Patent No. 1545 Condensing pans employed in the condensation of milk. 1874Knight Dict. Mech., Condensing-lens, a plano-convex..or double convex lens, to concentrate rays upon an opaque microscopic object.
b. condensing engine: † (a) an apparatus for condensing air, or compressing it into smaller space (obs.); (b) a steam-engine in which the steam is condensed in a condenser (sense 4 b), or (formerly, as in Newcomen's engine) by injection of water into the cylinder.
1752Smeaton Air-pump in Phil. Trans. XLVII. 422 Making this air-pump act as a condensing engine at pleasure. 1807Hutton Course Math. II. 239 The Condensing Engine, by which air may be condensed to any degree, instead of rarefied as in the air-pump.
1824R. Stuart Hist. Steam Engine, The power of the condensing Engine is..known by ascertaining the temperature of the steam, which moves the piston, the area of the piston, and the temperature of the vapour which remains. 1874Knight Dict. Mech., Condensing-engine, one in which the steam below or in advance of the piston is condensed.
2. intr. Growing dense, thickening (like a dense cloud, etc.). rare—1.
1749Johnson Irene ii. iv, Like the dread stilness of condensing storms. |