The control scheme and operating principle of a double closed-loop AC/DC power converter system are discussed by using physics.

从物理角度讨论了双闭环交/直流功率变换器系统的控制方案和工作原理。

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But the same system is used to control phone, power, traffic systems. I think that's the real threat.

但相同的系统被用来控制电话，电力和交通等系统，我想这才是真正的威胁。

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Mervyn King, the governor of the Bank of England, will assume responsibility for the stability of the financial system and control of the credit cycle, while retaining power to set interest rates.

英格兰银行行长默文金，将会在保持设定利率权力的同时，为了金融体系的稳定而承担责任，并且控制信贷周期。

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The Apollo spacecraft lost electrical power to its control system.

VOA: special.2009.07.29

Even though Congress is different in this era -- with both parties deeply divided internally and a closed committee system that dampens the power of party leaders to control members -- those historical struggles offer some instructive lessons for today as to how to seize a great opportunity that emerges.

CNN: Seize the immigration deal

The elites in any system not only have more political and economic power, they also have more access to information and control the distribution of information in any given system.

FORBES: The Mutual Knowledge Revolution

The firm has just successfully completed tests on a 30 kW prototype to see if its control system lets it launch, hover, generate power and land without human intervention.

BBC: Google acquires kite-power generator