限动环 meaning in English

stocollar
stop-collar

Sprin retaining rings . axially mounted circlips for shafts
弹簧限动环.轴的轴向安装卡环
Pliers and nippers . pliers for retaining rings
钳子和剪钳.限动环用钳子
Centralizer placement and stop collar testing
扶正器放置和限动环检验
Rings , retaining - technical specification
限动环.技术规范
Specification for spring retaining rings for aerospace application : carbon steel circlips metric series
航空航天用弹簧限动环规范.碳素钢开口簧环

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