$BS EN 1793-4-2015 Road traffic noise reducing devices Test method for determining the acoustic performance Intrinsic characteristics In situ values of sound diffraction《道路交通减噪设备测定.pdf$ 下载积分： 10000 积分

BS EN 1793-4-2015 Road traffic noise reducing devices Test method for determining the acoustic performance Intrinsic characteristics In situ values of sound diffraction《道路交通减噪设备测定.pdf

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BS EN 1793-3-1998 Road traffic noise reducing devices - Test method for determining the acoustic performance - Normalized traffic noise spectrum《道路交通噪音减低装置测定声学性能的试验方法标准化交通噪音频谱》.pdf

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BS EN 1793-2-2012 en 3987 Road traffic noise reducing devices Test method for determining the acoustic performance Intrinsic characteristics of airborne sound insulation under diff.pdf

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BS EN 1793-1-2017 Road traffic noise reducing devices Test method for determining the acoustic performance Intrinsic characteristics of sound absorption under diffuse sound field c.pdf

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BS EN 1792-2003 Welding - Multilingual list of terms for welding and related processes《焊接焊接和相关工艺术语的多语种对照表》.pdf

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BS EN 1791-1997 Surface active agents - Fatty alkyl dimethyl amine oxides - Determination of the amine oxide content《表面活性剂脂肪烷基乙烷胺氧化物胺氧化物含量测定》.pdf

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BS EN 1790-2013 Road marking materials Preformed road markings《道路标记材料预成型道路标记》.pdf

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BS EN 179-2008 Building hardware - Emergency exit devices operated by a lever handle or push pad for use on escape routes - Requirements and test methods《建筑五金件逃离线路用门拉手或推板控制的紧急出口装置.pdf

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BS EN 1788-2001 Foodstuffs - Thermoluminescence detection of irradiated food from which silicate minerals can be isolated《食品可与硅酸盐矿物隔绝的辐照食品热致发光检测》.pdf

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BS EN 1787-2000 Foodstuffs Detection of irradiated food containing cellulose by ESR spectroscopy《食物 ESR光谱法检测经过辐射的含纤维素食品》.pdf

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BS EN 1786-1997 Foodstuffs - Detection of irradiated food containing bone - Method by ESR spectroscopy《食品经过辐射的含骨质食品检验电子自旋共振光谱仪法》.pdf

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BS EN 1785-2003 Foodstuffs Detection of irradiated food containing fat Gas chromatographic mass spectrometric analysis of 2-alkylcyclobutanones《食品经过照射处理含脂肪食品的检测 2烷基环丁酮的气相色谱质谱分析》.pdf

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BS EN 1784-2003 Foodstuffs Detection of irradiated food containing fat Gas chromatographic analysis of hydrocarbons《食品经过照射处理含脂肪的食品的检测碳氢化合物的气相色谱分析》.pdf

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BS EN 1783-1997 Matches Performance requirements safety and classification《火柴性能要求安全性和分类》.pdf

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BS EN 1780-3-2002 Aluminium and aluminium alloys - Designation of unalloyed and alloyed aluminium ingots for remelting master alloys and castings - Writing rules for chemical compo.pdf

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BS EN 1780-2-2002 Aluminium and aluminium alloys - Designation of unalloyed and alloyed aluminium ingots for remelting master alloys and castings - Chemical symbol based designatio.pdf

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BS EN 1780-1-2002 Aluminium and aluminium alloys - Designation of unalloyed and alloyed aluminium ingots for remelting master alloys and castings - Numerical designation system《铝和铝.pdf

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BS EN 1779-1999 Non-destructive testing - Leak testing - Criteria for method and technique selection《无损检验漏泄试验方法和技术选择标准》.pdf

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