CMS虚拟研究数据中心（VRDC）ETL到OHDSI通用数据模型v5，
CMS Virtual Research Data Center (VRDC) ETL to the OHDSI Common Data Model v5, (2015-10-08, SAS, 0KB, 下载0次)
加工中心用四轴夹具STP编程夹具图， 可以下载参考
Machining center with four axis fixture STP programming fixture diagram, you can download the reference. (2018-05-27, SAS, 285KB, 下载0次)