Piston
['pɪst(ə)n] or ['pɪstən]
解释:
(noun.) mechanical device that has a plunging or thrusting motion.
(noun.) United States neoclassical composer (1894-1976).
克劳德特录入--From WordNet
解释:
(n.) A sliding piece which either is moved by, or moves against, fluid pressure. It usually consists of a short cylinder fitting within a cylindrical vessel along which it moves, back and forth. It is used in steam engines to receive motion from the steam, and in pumps to transmit motion to a fluid; also for other purposes.
编辑:摩尔
同义词及近义词：
n. Plunger.
编辑:塞格雷
解释:
n. a circular plate of metal or other material used in pumps steam-engines &c. fitting and moving up and down within a tube or hollow cylinder.—n. Pis′ton-rod the rod to which the piston is fixed and which moves up and down with it.
手打:雷切尔
例句:
- A deep well with the piston in the water. 伯莎M.克拉克. 科学通论.
- The cylinder had been badly cast, the pipe-condenser did not work properly, and there was still the old leakage of steam at the piston. 鲁伯特·萨金特·荷兰. 历史性发明.
- A Frenchman named Denys Papin had built the first steam-engine with a piston. 鲁伯特·萨金特·荷兰. 历史性发明.
- They are divided into two great classes, single and double acting engines, accordingly as the water is admitted to one side of the piston only, or to both sides alternately. 威廉·亨利·杜利特. 世纪发明.
- Prior to its adoption steam was admitted to the cylinder during the whole time the piston was making its stroke from one end of the cylinder to the other. Edward W. Byrn. 十九世纪发明进展.
- By that arrangement there is attained the most direct application of the piston-rod to the crank, with the least loss of power. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
- When the piston moves downward as in (3), the valve in the pipe closes by its own weight, and the air in the cylinder escapes through the valve in the plunger. 伯莎M.克拉克. 科学通论.
- Among these, are siphon pumps, the force pump of Ctesibius, a fire-pump, having two cylinders, and two pistons, valves, and levers. 威廉·亨利·杜利特. 世纪发明.
- These cylinders move over stationary pistons which have orifices that allow the liquid to pass from one side of the piston to the other. Edward W. Byrn. 十九世纪发明进展.
- In this the pistons consisted of two cog wheels, their leaves intermeshing, and rotated in an elliptical shaped chamber. 威廉·亨利·杜利特. 世纪发明.
- It was also found desirable to employ two engines instead of one, the pistons being made to rise and descend alternately. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
- When the gun is fired, the recoil causes it to slide back, carrying the pistons, and the recoil is checked by the resistance of the glycerine traveling through an opening past the pistons. Edward W. Byrn. 十九世纪发明进展.
- The cylinders and pistons were enclosed within the fire box in the rear. Edward W. Byrn. 十九世纪发明进展.
- Within are pistons, so connected that those in the lower and upper cylinders move together. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
整理:伊冯