美利体育登录入口官网:SN EN ISO 11146-2:2021 激光器和激光相关美利体育官网首页网址 激光束宽度、发散角和光束传播比的测试方法 第2部分:一般散光光束(ISO 11146-2:2021)
Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 2: General astigmatic beams (ISO 11146-2:2021)