中继机 relay meter 出中继机键 out going trunk switch; out trunk switch; outgoing trunk switch ..
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叙述了这一中继机所用元器件的可靠性优选方法。
Also described is an optional method of reliability screening for the components in the unattended relay unit.
在硬件的基础上设计了包括上位机、中继单元和模块单元在内的软件系统。
And then the software system which includes master, relay unit and module unit was designed on the basis of hardware.
控制系统由上位机、中继单元和模块单元构成。
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