Many matrix switching systems use three-pole guarded relays and wiring.

许多矩阵切换系统采用了三极保护继电器和配线。

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Chapter one is an overview to the research of high-speed switching systems.

第一章是对高速交换系统研究的综述。

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T-S-T switching network is one of the most popular network configurations used in large SPC switching systems.

数字交换网络是广泛应用于大型程控交换机的交换网络之一。

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In 1973 he cofounded Mitel, which pioneered electronic switching systems that allowed for operator-free PBXs and touch-tone phone sets.

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It is estimated that this facility will be capable of producing switching systems capable of handling between 1-1.5 million telephone lines annually.

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Globalstar's 48 birds act more like flying antennas, carrying calls to switching systems on the ground that are simple to operate and are linked into local phone networks.

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