GB/T 39998-2021.Paper, board and paper products-Determination of alkylphenol polyethoxylates-HPLC-MS method.1范围GB/T 39998规定了纸、纸板和纸制品中烷基苯酚聚氧乙烯...
GB/T 6165-2021.Test method of the performance of high efficiency particulate air filter-Efficiency and resistance.1范围GB/T 6165规定了高效、超高效滤料及过滤器效率和...
GB/T 40077-2021.Reciprocating positive displacement pumps and pump units-Technical requirements.1范围GB/T 40077规定了有关往复式容积泵和泵装置的技术要求,未对其...
GB/T 39969-2021.Test method of ventilation and rain resistance performance for ventilation louvers of building.GB/T 39969规定了建筑用通风百叶窗通风及防雨性能检测方...
GB/T 26077-2021.Metallic materials-Fatigue testing一Axial-strain-controlled method.1范围GB/T 26077规定了金属材料疲劳试验轴向应变控制方法的试验设备、试样、...
GB/T 24596-2021.Ductile iron pipes and fittings-Polyurethane coatings.1范围GB/T 24596规定了球墨铸铁管和管件内外表面聚氨酯涂层的技术要求、试验方法和检...
GB/T 9790-2021.Metallic materials-Vickers and Knoop microhardness tests of metallic and other inorganic coatings.1范围GB/T 9790规定了金属及其他无机覆盖层的维氏和努...
GB/T 3480.3-2021.Calculation of load capacity of spur and helical gears-Part 3 :Calculation of tooth bending strength.1范围GB/T 3480.3考虑了所有由齿轮传递的载荷所引起...
GB/T 39982-2021.Water lubricated journal bearings-Test methods of load carrying capacity.1范围GB/T 39982给出了完全浸水条件下动压润滑状态径向滑动轴承承载能力...
GB/T 40016-2021.General metadata for fundamental part and component.1范围GB/T 40016规定了基础零部件的通用元数据组成及其描述方法。GB/T 40016适用于基础零部...
