spring winder

1 2 3 4 5 ... 弹性垫圈^ spring washer 卷簧器^ spring winder 弹簧钢丝^ spring wire ...

直角三角形_馆档网 ... "弹簧重量"," spring weight" "卷弹簧器"," spring winder" "弹簧丝"," spring wire" ...

（Truss Drivers）、保险开关（Toggle Safety）、上紧发条（Spring Winder）， 即可将桥放下前进。