Devices have been characterized in terms of current-voltage curves and Josephson critical current vs.

装置的特点是在条款电流电压曲线和约瑟夫森临界电流与外部应用磁场。

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Switching phenomena with an associated negative resistance region have been observed in the current-voltage characteristics of lead oxide film sandwiches.

在氧化铅薄膜三层结构的电流——电压特性中发现了具有负电阻区的开关现象。

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Their job is to convert high-voltage alternating current from the mains into low-voltage direct current for mobile phones, laptops, iPods and other electronic gadgets.

ECONOMIST: How a boring gadget saved $2 billion-worth of electricity

Siemens is also offering high-voltage direct current technology, but ABB is a step ahead.

FORBES: Magazine Article

Its high-voltage direct current system is delivering electricity to the British Petroleum platform in the middle of the ocean.

FORBES: Magazine Article