英语词汇piston ring怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	piston ring
释义	piston ringn.（名词） An adjustable split metal ring that fits around a piston and seals the gap between the piston and the cylinder wall.活塞环：一种可调节的金属环，封住活塞与筒壁之间的空隙并环扣住活塞
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