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GB/T 39233-2020 镧铜合金GB/T 39233-2020.Lanthanum-copper alloys.1范围GB/T 39233规定了镧铜合金产品的技术要求、试验方法、检验规则、标志、包装、运输、贮存及质量证明书。GB/T 39233适用于电解及熔配法生产的镧铜合金,作为添加剂供生产铸造铜合金和变形铜合金等用。2规范性引...
10/16 2023
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GB/T 39236-2020 能效融资项目分类和评估指南GB/T 39236-2020.Guidance for taxonomy and assessment of energy efficiency financing projects.1范围GB/T 39236提供了能效融资项目分类规则和评估原则、评估程序、评估实施指南。GB/T 39236适用于...
10/16 2023
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GB/T 39290-2020 胶粘剂中芳香胺含量的测定GB/T 39290-2020.Determination the content of the aromatic amines in adhesives.1范围GB/T 39290规定了用气相色谱-质谱法测定胶粘剂中芳香胺含量的方法。GB/T 39290适用于胶粘剂中芳香胺含量的测定。2规范性引用...
10/16 2023
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GB/T 39359-2020 积分球法测量悬浮式液固光催化制氢反应GB/T 39359-2020.Integrating sphere method for the test of liquid/ solid suspended photocatalytic hydrogen production reaction.1范围GB/T 39359规定了积分球法测量悬浮...
10/16 2023
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GB/T 39278-2020 0.1 m~2 m屏蔽壳体屏蔽效能的测量方法GB/T 39278-2020.Method for measuring the shielding effectiveness of shielding enclosures having all dimensions between 0.1 m and 2 m.1范围GB/T 39278规定了0...
10/16 2023
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GB/T 39486-2020 化学试剂电感耦合等离子体质谱分析方法通则GB/T 39486-2020.Chemical reagent-General rules for inductively coupled plasma mass spectrometry.1范围GB/T 39486规定了化学试剂用电感耦合等离子体质谱法对仪器的要求和测定方法。GB/T 39486...
10/16 2023
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GB/T 39519-2020 高应力液压件圆柱螺旋压缩弹簧技术条件GB/T 39519-2020.Hydranlic cylindrically helical compression spring with high working stress-Technical specifications.1范围GB/T 39519规定了高应力液压元件用圆截面等节距圆柱螺...
10/16 2023
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GB/T 39520-2020 弹簧残余应力的X射线衍射测试方法GB/T 39520-2020.Test method for determination the residual stress of spring by X-ray diffraction.1范围GB/T 39520规定了采用X射线衍射原理检测弹簧(螺旋弹簧、钢板弹簧和稳定杆,以下简称“弹簧”)...
10/16 2023
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GB/T 39523-2020 精密行星摆线减速器扭转振动性能测试方法GB/T 39523-2020.Test method for torsional vibration of precision planetary cycloidal reducers.1范围GB/T 39523规定了精密行星摆线减速器扭转振动的术语和定义、试验件、测试装置、测试方法与数据处理。G...
10/16 2023
