单词：retainer pin
retainer pin的用法和样例：
例句
- Remove the cotter pin and nut from the drag link at the pitman arm.从转向拉杆上拆下转向摇臂处的开口销和螺母。
- They can also replace some spring spacers, pin lockers and other mechanical fasteners.可替代弹簧垫，开口销等机械锁固方式。
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