A new weak DC sensor which is used in measurement of lightning current is introduced.

介绍了一种新型的磁多谐振荡式直流小电流传感器在雷电流测量中应用。

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The measurement of weak DC signal is the key technique for on-line DC monitoring system with XLPE power cables to improve its measurement accuracy.

为了提高XLPE电缆直流法在线监测的测量精度，需对微弱直流信号进行测量。

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This paper lays stress on the description of the three main features of KD1411: 1. the design of weak signal DC amplifier with programmable gain;

本文重点介绍了KD1411的以下三个主要特点：（1）增益可编程控制的微弱信号放大器的设计；

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But President Obama also faced a steep uphill battle to win reelection a weak economy, high unemployment, a looming fiscal cliff, gridlock in Washington DC, a majority of voters seeing the country as being on the wrong track, a disastrous performance in the first presidential debate and a viciously personal campaign against him.

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