| 单词 | air damper |
| 释义 | > as lemmasair damper air damper n. (a) = damper n. 3 (now rare); (b) a device using compressed air to damp mechanical vibrations. ΘΚΠ the world > matter > properties of materials > temperature > heat > heating or making hot > that which or one who heats > [noun] > a device for heating or warming > devices for heating buildings, rooms, etc. > chimney > plate or hood to control draught cowc1736 hood1750 damping1756 damper1788 air damper1794 cowl1812 back-draught1825 mitre1890 1794 J. Southern Let. 28 Apr. in W. B. Crump Leeds Woollen Industry 1780–1820 (1931) 214 I find not any order for other pumps than the air dampers which have been long sent off. 1872 U.S. Patent 131,681 1/1 a indicates the furnace-grate; b, the ash-pit;..and e, an air damper above the fire for admitting air to cool the fire when too hot. 1914 Times 11 Feb. 38/3 The chief addition being an arrangement which enables the gas-examiner to adjust the position of the air damper of the standard Argand burner without leaving his seat. 1927 Jrnl. Sci. Instruments 4 227 An air damper m is provided underneath the base, and of course the two plates of this are provided with vertical adjustment. 1989 R. Dryer & G. Lata Exper. Biochem. i. i. 10 A system of closed, lightweight cylinders which serve as an air damper to slow the moving parts. < as lemmas |
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