Draft Document - Dentistry - Number coding system for rotary instruments - Part 5: Specific characteristics of root-canal instruments (ISO/DIS 6360-5:2006); German version prEN ISO 6360-5:2006
文件草稿.牙科学.旋转器械的数字编码系统.第5部分:根管器械的特殊特性（ISO/DIS 6360-5-2006）；德文版prEN ISO 6360-5:2006
2007-02-01
DIN EN ISO 28439-DRAFT
Draft Document - Workplace atmospheres - Characterization of ultrafine aerosols/ nanoaerosols - Determination of the size distribution and number concentration using differential mobility analysing systems (ISO/DIS 28439:2009); German version prEN ISO 28439:2009
文件草案.工作场所大气.超细气溶胶/纳米气溶胶的特性.使用微分迁移率分析系统测定粒度分布和数量浓度（ISO/DIS 28439-2009）；德文版prEN ISO 28439:2009