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。

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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。

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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.

锅炉控制系统可以分为汽包水位控制系统、蒸汽压力控制系统、炉膛负压控制系统和燃烧经济控制系统。

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With states like Connecticut and Colorado passing strict new restrictions on gun owners and the President flying around the country to drum up support for national gun control, ammo buyers are like consumers queuing for gas or loading up on gold in the inflationary 1970s.

FORBES: The Bullet Bubble: Is Ammo The Next Bitcoin, Or Gold In The 1970s?

Still, Schmidt prefers beating the drum for Novell's "digitalme"-software that gives Net surfers control over their identities.

FORBES: CEOs for the next century

In the plant's control room, Penrice's workers watch crystals form on the outside of a vacuum-drum filter.

ECONOMIST: Petri-dish economies