
Standard for Quality Inspection and Evaluation of Petroleum Construction Engineering Telecommunication Engineering (Optical Fiber Digital Transmission System Engineering for the Telecommunication Net)
标准号:SY 4032.8-1993
Standard for Quality Inspection and Evaluation of Petroleum Construction Engineering Telecommunication Engineering (Optical Fiber Digital Transmission System Engineering for the Telecommunication Net)
标准号:SY 4032.8-1993