In the plant’s control room, Penrice’s workers watch crystals form on the outside of a vacuum-drum filter.
在Penrice公司车间的控制室，工人们可以看到晶形在真空鼓过滤器表面凝结。
2
This paper introduces a control scheme with single loop digital regulator for the boiler drum level control and describes the composition of the system.
本文介绍了用单回路数字调节器实现锅炉汽包水位控制的方案及系统的组成方法。
3
Boiler control system is composed of drum water level control system, stem pressure control system, hearth negative pressure control system and combustion economical control system.