道路照明系统是城市建设不可缺少的公用设备。
Street lighting system is the absolutely necessary public equipment for the city construction.
本文探讨了在poy纺丝线改造成t CS生产线时对干燥系统、纺丝设备及公用工程的要求。
The requirements for drying system, spinning equipment and public utilities in the reformation of POY spinning line into TCS line are discussed in this paper.
对主要的设备、关键的公用设施和系统，还需要开展IQ、OQ和PQ。
Major equipment and critical utilities and systems, however, require IQ, OQ and PQ.
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