piston
US /ˈpɪs.tən/
UK /ˈpɪs.tən/
名詞
活塞
a disk or short cylinder fitting closely within a tube in which it moves up and down, as in a steam engine or internal combustion engine, to convert pressure into linear motion or vice versa
範例:
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The engine's pistons move rapidly up and down, driving the crankshaft.
發動機的活塞快速上下移動，驅動曲軸。
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A faulty piston can cause significant damage to an engine.
有故障的活塞可能對發動機造成嚴重損壞。