NEN 379-2003 标准详情
- 标准号:NEN 379-2003
- 中文标题:产品技术文档 - 折叠和灌装图纸中
- 英文标题:Technical Product Documentation - Folding And Filling Of Drawing Sheets
- 标准类别:荷兰国家标准NEN
- 发布日期:
Defines requirements for automatic welding filters which switch their luminous transmittance to a lower predetermined value when a welding arc is ignited (referred to as welding filters with switchable scale numbers).
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