| 单词 | piston |
| 释义 | piston n. 1. a disc or short cylinder fitting closely within a tube in which it moves up and down against a liquid or gas, used in an internal-combustion engine to impart motion, or in a pump to receive motion. 2. a sliding valve in a trumpet etc. Phrases and idioms piston-ring a ring on a piston sealing the gap between the piston and the cylinder wall. piston-rod a rod or crankshaft attached to a piston to drive a wheel or to impart motion. Etymology: F f. It. pistone var. of pestone augment. of pestello PESTLE |
| 随便看 |
英语词典包含43808条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。