Seeger circlip ring, spring ring (snap ring)
【生活】用于腕表系结物的弹簧十字钮扣
spring cross studs for wrist-watch fastening
暂无补充释义。
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Spring at the Foot
spring stop-nut locking fastener【机】
spring hock
constant-force spring【机】
buffer spring (volute spring)
spring