Television systems, which transmit 30 picture frames per second, must operate on a broad electromagnetic spectrum.

每秒传输30幅图象画面的电视系统，它必须工作于宽带电磁波谱。

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Abstract: lightning damage to the cable system is very strong. In the cable television systems, lightning protection design is a very important job.

摘要：雷电对有线电视系统的危害十分强烈，在有线电视系统中，防雷设计是一项十分重要的工作。

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The FCC had imposed substantial charges on cable television systems, relying on a broad delegation of authority to regulate the communications industry.

联邦电信委员会依据管理通讯工业的某一广泛授权，对有线电视系统规定了很高的收费标准。

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They could also learn how to prevent identity theft, how to understand their telephone bill, and even how to choose between competing cable television systems.

VOA: special.2011.06.24

The site is home to transmitters for most of the city's television stations, as well as some radio stations, several mobile phone companies and police communication systems.

VOA: standard.2009.09.01

At the high end there are deluxe mobile homes and in-car satellite television systems.

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This includes manning X-ray machines, searching people, searching vehicles and operating closed-circuit television systems, he said.

CNN: UK faces security questions ahead of London Olympics

On February 8, 2010, Trident Microsystems, Inc. (Trident) completed its acquisition of its television systems and set-top box business lines.

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