Steel wire rope breaking device and torsion spring breaking safety device.
防钢丝绳断裂装置、扭簧断裂安全装置。
2
Automatic speed regulating apparatus as defined in claim 1 in which the torsion spring is connected to the hub by means of a resilient portion constituting an overload protection and damping device.
自动调速装置所界定的要求，1其中扭转弹簧连接到集线器的方式有弹性的部分构成了过载保护和阻尼装置。
3
The company provides electronic double-digital display tension spring, compression spring, torsion spring testing device, prijector, sclerometer, and salt spray tester.