[陕西省地方标准] DB61/T 1931-2024 冷料超薄罩面施工技术规范
[团体标准] T/ZZB 1931-2020 单排轮滑鞋
[国外标准] NFPA 1931-1999 Standard on Design of and Design Verification Test
[国外标准] BS EN 1931-2000 Flexible sheets for waterproofing - Bitumen, plastic and rubber sheets for roof wate
[河南省地方标准] DB41/T 1931-2019 油茶栽培技术规程
[林业行业标准] LY/T 1931-2010 4号紫胶原胶
[辽宁省地方标准] DB21/T 1931-2011 班克松育苗技术规程