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 GB/T 20385.1-2021  
Textiles—Determination of organotin compounds—Part 1:Derivatisation method using GC-MS

纺织品 有机锡化合物的测定 第1部分:衍生化气相色谱-质谱法
 GB/T 3480.2-2021  
Calculation of load capacity of spur and helical gears—Part 2: Calculation of surface durability (pitting)

直齿轮和斜齿轮承载能力计算 第2部分:齿面接触强度(点蚀)计算
 GB/T 2680-2021  
Glass in building—Determination of light transmittance, solar direct transmittance, total solar energy transmittance, ultraviolet transmittance and related glazing factors

建筑玻璃 可见光透射比、太阳光直接透射比、太阳能总透射比、紫外线透射比及有关窗玻璃参数的测定
 GB/T 1406.3-2021  
Types and dimensions of lamp caps—Part 3:Prefocus caps

灯头的型式和尺寸 第3部分:预聚焦式灯头
 GB/T 28170.2-2021  
Information technology—Computer graphics and image processing—Extensible 3D(X3D)—Part 2: Scene access interface(SAI)

信息技术 计算机图形和图像处理 可扩展三维组件(X3D) 第2部分:场景访问接口(SAI)

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