镭射光也可以通过地下光缆来传输能量，来代替铜线传输。
Laser beams could be sent down fiber-optic cable to power anything currently powered by copper wire.
叙述了MAX274/275连续时间有源滤波器的特点和工作原理，并分析了它在研制地下光缆路由探测仪中的应用。
The characteristics and operation principles of MAX274/275 wave filters are hereby described in terms of their applications in the detecting the subterranean optical fiber cables.
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