| 词汇 | piston |
| 释义 | pistonWord family nounpiston ringpiston Engineering pis·ton /ˈpɪstən/ noun [countableC] TEa part of an engine consisting of a short solid piece of metal inside a tube, which moves up and down to make the other parts of the engine move 活塞 Examples from the Corpus piston• Some of their multi-cylinder motor cycle engines have pistons little bigger than thimbles.• Here, the float arm closes a horizontal piston, fitted with a washer against the valve seating.• It consists of an upright cylinder containing a twelve-inch piston with rod two and a half inches in diameter.• He used a cane and tried to walk fast and his hips bobbed like pistons gone awry.• Controlled by computer and battery-powered hydraulics, they push or pull like pistons to damp movement by the walls.• But as the barrel swung it would push a small piston that, in return, moved the hand lever.• The steel piston is fitted with brass piston rings which, says Hytek, makes for longer life.• This is a wonderful piece of ancient machinery of indeterminate age, and consists of a crank-driven triple piston pump. (1700-1800) French Italian pistone “large stick for crushing”, from pistare “to crush” |
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