Their short-distance radios relay information to each other in a web and pass it to a satellite unit at the edge that feeds into the National Interagency Fire Center’s network.

网点的短距离无线电能在一个网络内彼此中转信息，然后把它传送给设在森林边缘的卫星装置，再由卫星装置发送到美国国家跨部会消防中心的网络。

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And then the software system which includes master, relay unit and module unit was designed on the basis of hardware.

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。

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The master communicates with the relay unit by serial communication interface and the relay unit communicates with module unit by wireless communication network.

上位机和中继单元之间采用串行口通信，中继单元和模块单元之间采用无线网路进行通信。

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On Day 44 of the trek, both a radar device meant to measure the ice thickness and a satellite communications unit to relay the data are still not working - despite being brought back to the UK for repairs and then delivered to the team last week.

BBC: Arctic team gives up on ice radar