GB/T 20575-2019 鲜、冻肉生产良好操作规范.pdf文档页数:11文档大小:948.25KB文档格式:pdf ICS67.120.10 X00 GB 中华人民共和国国家标雅 GB/T20575—2019 代替GB/T205752006 鲜、冻肉生产良好操作规范 Specification of good manufacture practice for fresh and frozen m
BS ISO 6195-2021 流体动力系统和元件. 往复作用的活塞杆刮垢环罩. 尺寸规格和公差.pdf文档页数:24文档大小:9.36MB文档格式:pdf BSISO6195:2021 BSI Standards Publication Fluid power systems and ponents-Cylinder- rod wiper-ring housings in reciprocating applicat