Based on the analysis of the friction forces encountered by micro-cable or micro-duct to be blown in, the practicability of the utilization of old cable ducts with resident cable is illustrated.
根据用气送技术安装新设微光缆或微管道时的摩擦力分析，说明了再利用已占用管道的可行性。
Based on the analysis of the friction forces encountered by micro-cable or micro-duct to be blown in, the practicability of the utilization of old cable ducts with resident cable is illustrated.
根据用气送技术安装新设微光缆或微管道时的摩擦力分析，说明了再利用已占用管道的可行性。
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