DB32-T 4517-2023 滨海盐碱地暗管排盐改良技术规程 江苏省
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ISO IEC TR 24766 2009 Information technology — Systems and software engineering — Guide for requirements engineering tool capabilities.pdf
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ISO 8002-1986Mechanical vibrations. Land vehicles. Method for reporting measured data first edition.pdf
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ISO 6222 1999 Water quality — Enumeration of culturable micro-organisms — Colony count by inoculation in a nutrient agar culture medium.pdf
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GB-T 18775-2009 电梯、自动扶梯和自动人行道维修规范.pdf
GB-T 16452-1996 电讯夹扭钳和剪切钳术语.pdf
GB-T 12057-1989 使用串行二进制数据交换的数据终端设备和数据电路终接设备之间的通用37插针和9 插针接口.pdf
GB-T 21939-2008 土方机械 低速机器报警装置 超声波及其它系统.pdf
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