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piston /ˈpɪstən/ n

中文：活塞

中文 · 活塞Español · pistónFrançais · pistonDeutsch · Kolben
Meaning：Part put into motion by hydraulic pressure, which pushes the brake pads to squeeze the disc.
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Found in these illustrated scenes（8）

Disc brake Gasoline engine Design of a spark-ignition two-stroke engine Structure of a four-stroke gasoline engine Mono-metal piston with windows Four-stroke engine Turbocharged engine Drum brake

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