| 单词 | mushroom valve |
| 释义 | > as lemmasmushroom valve mushroom valve n. a lift valve whose moving element somewhat resembles a mushroom in shape. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > control(s) > [noun] > valve > lift mushroom valve1877 lift valve1887 1877 Design & Work 7 July 114/3 Exhaust valve, consisting of ordinary mushroom valve. 1924 S. G. Wheeler Marine Engin. I. vii. 102 Occasionally steam engines are controlled by ‘mushroom’ valves like internal combustion engines. 1979 Motorcycling Man. 29/1 It is not practical to use poppet or mushroom valves operated by cams in two-stroke motorcycle engines. < as lemmas |
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