The localizer is composed of two parts:a constant current constant frequency signal source and a signal detector.

装置由恒流信号电源和信号检测装置两部分组成。

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After he pulls away Harris waves a signal detector over Alexis' body and produces a tracking device on the hospital wristband.

哈里斯将车停在了一边，他在亚历克西斯身体上方挥动一个信号探测器，找到了在他的护腕上有一个追踪装置。

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After he pulls away, Harris waves a signal detector over Alexis' body and produces a tracking device on the hospital wristband.

哈里斯将车停在了一边，他在亚历克西斯身体上方挥动一个信号探测器，找到了在他的护腕上有一个追踪装置。

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But when poachers carrying rifles or machetes traipse by a detector, it will send a radio signal to a treetop antenna.

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Its reaction with the odour molecules changes a detector's electrical resistance, and this signal is fed into a neural net (the closest that computer technology has got to imitating the pattern-recognising abilities of networks of nerve cells) to work out what is being smelt.

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X-rays, which may confuse the signal that the second part of the machine the detector is there to pick up.

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