| 单词 | puppet valve |
| 释义 | > as lemmaspuppet valve puppet valve n. now rare = poppet valve n. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > control(s) > [noun] > valve > disk puppet-clack1744 puppet valve1783 poppet1864 1783 Encycl. Brit. X. 8277/1 The steam-clack, or puppet-valve..is a brass valve on the top of a pipe opening into the boiler, to let off the steam when it is too strong. 1835 Amer. Railroad Jrnl. 25 Apr. 245/3 Let the valve be..of the kind called puppet valves. 1887 D. A. Low Introd. Machine Drawing (1892) 108 Sketches showing the construction of a conical metal lift or puppet valve and seating. 1911 Times 23 June 5/1 (advt.) After having used and experimented with several different makes of cars equipped with the old system of puppet valve engines.., I purchased two Daimler cars. < as lemmas |
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