The current measurement and control system in a Low-frequency Magnetic Field is a comprehensive system of hardware and software, including two parts: current measurement and computer control.

低频电磁场电流测控系统包括电流测试和输出控制两个部分，由软件和硬件相互配合组成一个完整的计算机控制系统。

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Based on the theory of electromagnetic inductance, the high frequency, low frequency and intelligent monitors were described, including a series of JX monitors and CMOS monitors for books.

以电磁感应原理为基础，介绍了高频、低频监测仪，包括JX系列图书监测仪、CMOS图书监测仪和智能监测仪。

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This paper expounded all technical difficult points in detail and special handling methods, including how to replenish the low frequency and draw the wavelet.

文章详细阐述了应用中的各项技术难点以及对数据进行特殊处理、补充低频、提取子波的方法。

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Over the years, the government has taken steps to address the problem, including regulating low-frequency noise like water pumps, and reducing maximum decibels.

BBC: Taiwan's noise pollution dilemma

The DA-F60 incorporates neodymium magnets and a passive radiator to produce results typically found in high-end Hi-Fi audio systems, including tuned low-frequency reproduction and virtually no distortion even at high volumes.

ENGADGET: Samsung introduces its CES audio hardware, claims a world first

The company produces more than 15, 000 standard products, including amplifiers, data converters, and low-power radio frequency devices.

FORBES: Buying Tech: Texas Instruments