GB-T 36082-2018 纳米技术 特定毒性筛查用金纳米颗粒表面表征 傅里叶变换红外光谱法
ISO 6545-1992Acceptance conditions for gear hobbing machines. Testing of the accuracy first edition.pdf
ISO 2721 2013 Photography — Film-based cameras — Automatic controls of exposure.pdf
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ISO 18747-1 2018 Determination of particle density by sedimentation methods Part 1 Isopycnic interpolation approach.pdf
ISO 3451-5 2002 Plastics — Determination of ash — Part 5 Poly(vinyl chloride).pdf
ISO IEC TR 29138-2 2009 Information technology — Accessibility considerations for people with disabilities — Part 2 Standards inventory.pdf
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GB-T 26087-2010 小艇 锚泊、系泊和拖曳 强力点.pdf
GB-T 6753.4-1998 色漆和清漆 用流出杯测定流出时间.pdf
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GB-T 34832-2017 信息与文献 CNMARC的XML表示.pdf
GB-T 20016-2005 金属和其它无机覆盖层 不锈钢部件平整和钝化的电抛光法.pdf
GB-T 17969.6-2000 信息技术 开放系统互连 OSI登记机构的操作规程 第6部分 应用进程和应用实体.pdf
GB 11562-2014 汽车驾驶员前方视野要求及测量方法.pdf
GB-T 6682-2008 分析实验室用水规格和试验方法.pdf
GB-T 2900.74-2008 电工术语 电路理论.pdf