所以O'Brien先生一直研究一套基于天花板的系统，用于跟踪接收装置所在位置，利用来自定向传送器的几束激光向该装置发出信号。

So Mr O'Brien has been working on a ceiling-based system that tracks where a receiving device is, and then sends it a signal using several laser beams from a directional transmitter.

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实验结果表明，基于激光莫尔信号的精密定位装置可获得亚微米级的平面定位精度。

The experimental results show that submicron level plane positioning accuracy can be achieved by the precision positioning device based on laser Moire signal.

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信息记录装置通过对记录媒体照射激光以形成与记录信号对应的记录标记来记录信息。

The information recording device can form recording marks corresponding to the recording signals by irradiating laser for the recorded medium so as to record the information.

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