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单词 piston
释义

Definition of piston in English:

piston

noun ˈpɪst(ə)nˈpɪstn
  • 1A 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 derive motion, or in a pump to impart motion.

    活塞

    Example sentencesExamples
    • Modified piston valves were also fitted to counteract the high coal consumption as the originals became worn.
    • Another system uses hydraulic pistons that mount to a wood platform.
    • Adkins' solution was to affix his gas piston to the standard recoil spring plug.
    • Each explosion would release enough force to push the piston.
    • A hydraulic hammer is basically a hydraulically powered reciprocating piston inside of a body.
    • The aluminum block has ductile iron cylinder liners and is filled with JE pistons.
    • The bore is often pitted and the gas piston is usually corroded.
    • When the trigger is pulled, the compressed air expands and drives the piston forward.
    • The force of the resulting explosion pushes the piston down the cylinder for the exhaust stroke.
    • The engine's camshaft drives the pump pistons through a roll rocker arm.
    • The piston in its cylinder rocked, trembled, didn't move.
    • The resulting explosion pushes a piston, which is attached to a connecting rod.
    • The cylinders have to be right and their fit with the piston rings perfect.
    • Besides leaving salt deposits, rusting internal parts and causing valve damage, water in an engine also makes short work of pistons and cylinders.
    • The stroke is the distance that the piston moves up and down.
    • Jet engines are crucial: They're faster than piston engines and far safer.
    • Then the piston moves back up to compress this fuel/air mixture.
    • The central control circuit then sends a control signal to the driver's circuit for the accumulator piston.
    • The five mobile panels (one flap, four sliding) are activated by hydraulic pistons.
    • The resulting explosions of fuel and air drive the pistons which turn the crankshaft.
    1. 1.1 A valve in a brass musical instrument in the form of a piston, depressed to alter the pitch of a note.
      (铜管乐器上的)活塞阀键
      Example sentencesExamples
      • It is in C, a tone above the euphonium, and reaches the lowest notes with the aid of six pistons; its upward range is much greater than that of the larger tubas.
      • The valves and pistons on a trumpet are very delicate - and essential.

Origin

Early 18th century: from French, from Italian pistone, variant of pestone 'large pestle', augmentative of pestello 'pestle'.

  • The Latin pistullum meant pestle (Middle English) and is the source of the botanical pistil (early 18th century) from its similar shape. From the same source Italian formed pestone for a large pestle or rammer, and this, via French, is the source of piston.

Rhymes

cistern, Liston, Wystan

Definition of piston in US English:

piston

nounˈpɪstnˈpistn
  • 1A disk 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 derive motion, or in a pump to impart motion.

    活塞

    Example sentencesExamples
    • The engine's camshaft drives the pump pistons through a roll rocker arm.
    • When the trigger is pulled, the compressed air expands and drives the piston forward.
    • Each explosion would release enough force to push the piston.
    • Adkins' solution was to affix his gas piston to the standard recoil spring plug.
    • The force of the resulting explosion pushes the piston down the cylinder for the exhaust stroke.
    • The bore is often pitted and the gas piston is usually corroded.
    • The resulting explosion pushes a piston, which is attached to a connecting rod.
    • Another system uses hydraulic pistons that mount to a wood platform.
    • A hydraulic hammer is basically a hydraulically powered reciprocating piston inside of a body.
    • Jet engines are crucial: They're faster than piston engines and far safer.
    • Modified piston valves were also fitted to counteract the high coal consumption as the originals became worn.
    • The central control circuit then sends a control signal to the driver's circuit for the accumulator piston.
    • The aluminum block has ductile iron cylinder liners and is filled with JE pistons.
    • The cylinders have to be right and their fit with the piston rings perfect.
    • The resulting explosions of fuel and air drive the pistons which turn the crankshaft.
    • The piston in its cylinder rocked, trembled, didn't move.
    • The stroke is the distance that the piston moves up and down.
    • Then the piston moves back up to compress this fuel/air mixture.
    • Besides leaving salt deposits, rusting internal parts and causing valve damage, water in an engine also makes short work of pistons and cylinders.
    • The five mobile panels (one flap, four sliding) are activated by hydraulic pistons.
    1. 1.1 A valve in a brass musical instrument in the form of a piston, depressed to alter the pitch of a note.
      (铜管乐器上的)活塞阀键
      Example sentencesExamples
      • It is in C, a tone above the euphonium, and reaches the lowest notes with the aid of six pistons; its upward range is much greater than that of the larger tubas.
      • The valves and pistons on a trumpet are very delicate - and essential.

Origin

Early 18th century: from French, from Italian pistone, variant of pestone ‘large pestle’, augmentative of pestello ‘pestle’.

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更新时间:2024/12/27 3:00:26