spring drive meaning in English

弹簧传动

Shutter windows open easily and electrical control , electric button switches , rocker hand , a belt wheel , the spring drive shaft and other open manner
卷帘门窗开启自如，有电动遥控、电动按键开关、手摇杆、手拉皮带、弹簧轴驱动等多种开启方式。
According to its special working environment and technical parameters , the special stretchable mechanism that possesses properties of spring driving , mechanical joint moving and elastic locking was determined
根据其所工作的特殊环境和技术参数，确定了具有弹簧驱动、机械式联动、弹性锁止等特征的空间可伸展机构。