专利 一种基于混凝土收缩徐变模型的无砟轨道受力分析方法
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ISO 4158 1978 Ferrosilicon, ferrosilicomanganese and ferrosilicochromium — Determinat.pdf
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ISO 7304-2 2008 Alimentary pasta produced from durum wheat semolina — Estimation of cooking quality by sensory analysis — Part 2 Routine method.pdf
ISO 10110-12 2019 Optics and photonics — Preparation of drawings for optical elements and systems — Part 12 Aspheric surfaces.pdf
ISO 16649-2 2001 Microbiology of food and animal feeding stuffs — Horizontal method for the enumeration of beta-glucuronidase-positive Escherichia coli — Part 2 Colony-count technique at 44 degrees C using.pdf
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ISO 23537-1 2022 Requirements for sleeping bags Part 1 Thermal mass and dimensional requirements for sleeping bags designed for limit temperatures of 20 C and higher.pdf
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GB-T 22273-2008 良好实验室规范建议性文件 良好实验室规范原则在体外研究中的应用.pdf
GB-T 33283-2016 纺织品 色牢度试验 耐工业洗涤色牢度.pdf
GB-T 2679.7-2005 纸板 戳穿强度的测定.pdf
GB-T 5856-1999 热压机通用技术条件.pdf
GB-T 24177-2009 双重晶粒度表征与测定方法.pdf
GB-T 648-2011 化学试剂 硫氰酸钾.pdf