NF S86-304-2005 时间计量仪表.荧光覆层.试验方法和要求
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NF S86-304-2005 时间计量仪表。荧光覆层。试验方法和要求
Time-measuring instruments - Photoluminescent deposits - Test methods and requirements.
Time-measuring instruments - Photoluminescent deposits - Test methods and requirements.
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