1、游丝
...balance screw 平衡螺钉balance spring 游丝，平衡弹簧balance weight 平衡锤，平衡块，配重 ...
2、均衡弹簧
...平衡试验 balancing test均衡弹簧 balance spring柏思麦钢 Bessemer steel ...
3、游丝发条
... Balance of nature 自然生态平衡 Balance spring 游丝发条 by -----英语组_暖 ...
4、平衡弹簧
... 收割台平衡弹簧 platform balance spring 游丝，平衡弹簧 balance spring 拨禾轮起落平衡弹簧 reel lifting spring ...
balance e spring游丝
balance-spring stud外椿
balance e spring stud游丝外栓
balance whip spring摆轮止动簧
balance-spring chronometer摆轮游丝精密记时计
BALANCE-SPRING游丝;摆轮游丝
balance valve spring平衡阀弹簧
balance restored spring平衡复位弹簧
balance e spring stud screw游丝外栓螺钉