以上来源于: WordNet
N a flat spring ring split at one point so that it can be sprung open, passed over a shaft or spindle, and allowed to close into a closely fitting annular recess to form a collar on the shaft A similar design can be closed to pass into a bore and allowed to spring out into an annular recess to form a shoulder in the bore 固位簧环 (Also called retaining ring) [engineering]
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