The simple vibration-proof hand knob provides progressive springthrust.
简单的防振动防手旋钮提供渐进式弹簧推力。
2
The limitations of air cylinder actuators are mechanical spring limits and thrust requirements in excess of 75,000 Ibs.
空气缸体执行机构的局限性在于机械弹簧的局限性和要求推力不超过75,000磅。
3
Normally Open: When the coil is energized, the pilot hole closed, the valve chamber and pressurized by the piston return spring throttle thrust, the electromagnetic valve is closed.