GB/T 5137.1-2020.Test methods of safety glazing materials used on road vehicles-...

国家标准2023.07.28

GB/T 38678-2020.General technical requirements for shallow geothermal energy uti...

国家标准2023.07.28

GB/T 38692-2020.Technical specification for energy online monitoring of energy c...

国家标准2023.07.28

GB/T 17766-2020.Classifications for mineral resources and mineral reserves.1范围GB...

国家标准2023.07.28

GB/T 38718-2020.Geological evaluating methods for shale oil.1范围GB/T 38718规定了页岩油的...

国家标准2023.07.28

GB/T 38683-2020.Method of ultrasonic testing for large inclusions in bearing ste...

国家标准2023.07.28

GB/T 38682-2020.Welded nickel-iron-chromium alloy pipes for fluid service.1范围GB/...

国家标准2023.07.28

GB/T 6931.2-2020.Belt drives-Vocabulary-Part 2 : V-belts and V-ribbed belt drive...

国家标准2023.07.28

GB/T 4156-2020.Metallic materials-Sheet and strip-Erichsen cupping test.1范围GB/T...

国家标准2023.07.28

GB/T 5137.2-2020.Test methods of safety glazing materials used on road vehicles-...

国家标准2023.07.28