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。

youdao

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。

youdao

Not that the earth blocks all that but the earth blocks the low-frequency stuff for sure, including radio waves and that can be brought into you just by being barefoot.

地虽然不能抵挡所有频率，但它能抵挡低频电波，包括无线电波，单单赤足便能达到以上效果。

youdao

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