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GB/T 15972.49-2021  China national standard english version:

　
GB
中华人民共和国国家标准
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

GB/T 15972.49-2021

Specifications for optical fibre test methods—Part 49: Measurement methods and test procedures for transmission characteristics—Differential mode delay
光纤试验方法规范 第49部分：传输特性的测量方法和试验程序 微分模时延
Issued Date:2021/10/11 　 Implemented Date:2022/5/1
Issued by: 　 The Standardization Administration of the People's Republic of China
　

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GB Standard Code GB/T 15972.49-2021
Standard Category China National Standards
GB Standard English Title Specifications for optical fibre test methods—Part 49: Measurement methods and test procedures for transmission characteristics—Differential mode delay
GB Standard Chinese Title 光纤试验方法规范 第49部分：传输特性的测量方法和试验程序 微分模时延
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