| 单词 | piston speed |
| 释义 | > as lemmaspiston speed piston speed n. ΚΠ 1863 Sci. Amer. 29 Aug. 138/1 A piston speed of 468 feet per minute. 1987 Financial Post (Canada) (Nexis) 14 Dec. ii. 16 Speed control mufflers allow metering of exhaust air flow to control piston speed. < as lemmas |
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