ICS 31.260CCS L 50中华人民共和国国家标准GB/T 44293—2024显微物镜数值孔径图像式测量方法Image measurement method for numerical aperture of microscopic objective2024-08-23 发布2025-03-01 实施国家市场监督管理总局国家标准化管理委员会发 布目　　次前言 ·····················································...