Our fine current signal switching valves, DG4VC-3 Series, enable direct linkage to programmable controllers.

我们优秀的电流信号转换阀，DG4VC - 3系列，可直接联系到可编程控制器。

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The system also comprises ambient light level sensing, video signal switching technology and power conversion circuitry.

该系统还包括环境光强度感觉、视频信号交换技术及能量转换电路。

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Based on characteristics of PIN diode switch circuit in rf signal switching, a PIN electronic switch circuit is designed to perform filter switching.

基于PIN二极管开关电路在射频信号切换方面的特性，设计了一种应用于滤波器切换的PIN电子开关电路。

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Officials feared the brackish storm water that poured into tunnels could corrode vulnerable signal and switching systems, complicating the task of reopening a bus and rail system that ferries 8.5 million passengers on a typical workday.

WSJ: Superstorm Sandy Cuts Wide Swath of Damage

Officials feared the brackish storm water that poured into subway tunnels and onto tracks could corrode vulnerable signal and switching systems, adding to the time workers will need to reopen the MTA's full system, which ferries 8.5 million passengers on a typical workday.

WSJ: Buses Back, But Subways Could Take Days Longer

This provides a means of switching a signal between two wavelengths a neat trick for using bandwidth more effectively.

ECONOMIST: A new approach to making optical fibres