Low table by adjusting the outlet pressure control screw. 低压表的出口压力可由调节螺杆控制。
Like the single-stage regulator, outlet pressure from the first stage of the two-stage regulator rises as cylinder pressure decreases. 同单级调整器一样，两级调整器的第一级的出口压力随钢瓶压力的降低而升高。
The dial records showed a very slight variation in pressure. 刻度盘显示出压力有极微小的变化。
