问题描述：
英语翻译
PTA CONVEYING SYSTEM
1.PURPOSE/BACKGROUND
This trip system ensures that the conveyors and rotary valves can only be started in the
correct sequence and should any piece of equipment stop,it shuts down all equipment
upstream of the stopped unit.
PTA CONVEYING SYSTEM
1.PURPOSE/BACKGROUND
This trip system ensures that the conveyors and rotary valves can only be started in the
correct sequence and should any piece of equipment stop,it shuts down all equipment
upstream of the stopped unit.
问题解答：
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