humid atmosphere

• Optics and optical instruments - environmental test methods - humid atmosphere containing sulfur dioxide or hydrogen sulfide
  光学和光学仪器.环境试验方法.第20部分:含有硫化氢或二氧化硫的湿湿空气
• Optics and optical instruments - environmental test methods - part 20 : humid atmosphere containing sulfur dioxide or hydrogen sulfide iso 9022 - 20 : 1997
  光学和光学仪器.环境试验方法.第20部分:含有硫化氢或