They say that their backward laser would, for example, make it much easier to scan the atmosphere for signs of methane in the case of a ruptured gas pipe.
他们说他们的后向激光可以，例如，在气体输运管道破裂的情况下使探测大气中的甲烷信号变得更容易。
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The distinguishing feature of this plan is to adopt silicon backward photoelectric diode as target screen and to scan with fast electron.