GB/T 40069-2021.Nanotechnologies-Measurement of the number of layers of graphene relatedtwo-dimensional (2D) materials- Raman spectroscopy method.1范围GB/T 40069规定了使用拉曼...
GB/T 22459.8-2021.Refractory mortars- Part 8 : Determination of bleeding.1范围GB/T 22459.8规定了耐火泥浆泌水性试验的术语和定义、原理.仪器设备、取样、试...
GB/T 40237-2021.Test method for ignitability of foamed plastic-Welding spark method.1范围GB/T 40237规定了在实验室条件下采用电焊火花冲击水平放置的泡沫塑料试...
GB/T 23294-2021.Abrasion resistant refractory materials.1范围GB/T 23294规定了耐磨耐火材料的术语和定义、分类与牌号、技术要求、试验方法、质量评定程...
GB/T 40120-2021.Agricultural irrigation equipment-Thermoplastic collapsible hoses for irrigation-Specifications and test methods.1范围GB/T 40120规定了增强和非增强热塑性可...
GB/T 40136-2021.Technical specifications for planting pseudostellaria radix.1范围GB/T 40136规定了太子参种植的术语和定义、产地环境、种植技术和档案管理。...
GB/T 40285-2021.Technical specification for dam safety analysis and evaluation system of smart hydropower plant.1范围GB/T 40285规定了智能水电厂大坝安全分析评估系统...
GB/T 14229-2021.Test method of surface contact strength for gear load capacity.1范围GB/T 14229规定了关于渐开线圆柱齿轮接触疲劳强度试验的原理、目的、方法...
GB/T 3480.5-2021.Calculation of load capacity of spur and helical gears-Part 5 :Strength and quality of materials.1范围GB/T 3480.5给出了齿面接触强度极限和齿根弯曲强...
GB/T 40307-2021.Non-destructive testing一Test method for texture by neutron diffraction.1范围GB/T 40307规定了在反应堆上采用中子衍射技术检测材料织构的方法。...
