英语词汇“piston”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	piston
释义	piston —pistonlike, adj. /pis"teuhn/, n. 1. a disk or cylindrical part tightly fitting and moving within a cylinder, either to compress or move a fluid collected in the cylinder, as air or water, or to transform energy imparted by a fluid entering or expanding inside the cylinder, as compressed air, explosive gases, or steam, into a rectilinear motion usually transformed into rotary motion by means of a connecting rod. 2. a pumplike valve used to change the pitch in a cornet or the like. [1695-1705; < F < It pistone piston, a learned alter. of pestone large PESTLE, equiv. to pest(are) to pound (var. of ML pistare, deriv. of L pistus ptp. of pinsere to pound) + -one aug. suffix]
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