At present, due to difficulties caused by wavelength coding signal demodulation, system costs are too high in general areas to accept.
目前，由于波长编码信号解调困难而造成系统成本过高，在普通领域难以接受。
At present, due to difficulties caused by wavelength coding signal demodulation, system costs are too high in general areas to accept.
目前，由于波长编码信号解调困难而造成系统成本过高，在普通领域难以接受。
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