Attenuation by substitution measurement for short - length multimode graded - index and single - mode optical fiber assemblies 短长度多模分级指数光纤和单膜光纤组件用代换测量法的衰减试验
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Attenuation by substitution measurement for short - length multimode graded - index and single mode optical fiber cable assemblies 交替测量法进行短长度的多模渐变折射率光纤电缆和单模光纤电缆组件衰减量的测量