域测试规程FTP ？
Optical fibres - Part 1-45: measurement methods and test procedures - Mode field diameter.
光纤。第1 - 45部分：测量方法和试验规程。模场直径。
Field test calculation and analysis revealed that calculation results were accurate, testing technologies and analytical procedures were simple and it was suitable for field application.
通过现场测试计算和分析表明，该方法的计算结果正确、测试工艺及其分析过程简单，便于现场应用。
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