The paper expounds the specialities of laying cable or optical cable in paddy field along the railway in south of our country.
本文阐述了在我国南方铁路沿线水田中敷设光电缆的特点。
These provide theory basis for designing accuracy of optical spectrometer and are useful for laying out experiment scheme and analyzing experiment data.
这些工作为设计光谱测量仪器精度提供理论依据，对实验方案的制定和测量数据的分析有参考和启发作用。
The production line is mainly used in producing PVC, PE multiple-hole pipe. The produced pipes is widely used in laying optical cable.
本生产线主要用于生产PVC、PE多孔管，生产的管子广泛适用于穿、放光电缆。
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