In the past, CATV optical cable networks were costliness due to the price of optical equipment, the designer design optical receiver point little.
过去CAT V光缆网光设备价格昂贵，故设计的光接收点较少。
In the past, CATV optical cable networks were costliness due to the price of optical equipment, the designer design optical receiver point little.
过去CAT V光缆网光设备价格昂贵，故设计的光接收点较少。
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