Total reliability in the operation of the separator system can only be achieved when alarm devices are installed.

分离系统运行总的可靠性，在报警仪器安装时可以完全的实现。

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The power-frequency processes in power grid can be recorded by a lot of measuring devices installed in modern power system dispatching center.

现代电力系统调度中心装设的大量量测装置可以记录系统中发生的功率—频率动态过程。

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Thompson got Butterfield to disclose the existence of an elaborate system of listening devices that Richard Nixon had installed in the White House.

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Even so, Ubuntu's founder, Mark Shuttleworth, said he was in talks with manufacturers for devices to be sold with the system pre-installed within the year.

BBC: Ubuntu operating system comes to Android smartphones