英语词汇“compression rings”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	compression rings
释义	compression rings compression rings The top rings used on reciprocating engines' pistons. They seal the cylinder, so that an upward-moving piston can compress the air into the cylinder. Compression rings also transfer heat from the piston to the cylinder wall.
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