low ring lock 下环梁锁销

ring lock washer 螺丝弹簧垫片 ; 弹簧锁架垫片

door ring lock 门上弹簧锁

bead ring lock 扣圈盘锁紧装置

ring lock Scaffold 盘扣式脚手架

lock ring [计] [五金] 锁环 ; 锁定环

ring-lock 环锁

ring bicycle lock 蟹钳形自行车锁