专利 一种海上航标灯塔的接地装置
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ISO-IEC 29110-3-2 2018 Systems and software engineering - Lifecycle profiles for Very Small Entities (VSEs) - Part 3-2 Conformity certification scheme.pdf
ISO 13257 2018 Thermoplastics piping systems for non-pressure applications Test method for resistance to elevated temperature cycling.pdf
ISO 245 1998 Aerospace — Lockwire — Diameters.pdf
ISO 12233 2023 Photography — Electronic still picture imaging — Resolution and spatial frequency responses.pdf
ISO 10343 2014 Ophthalmic instruments — Ophthalmometers.pdf
ISO 23833 2013 Microbeam analysis — Electron probe microanalysis (EPMA) — Vocabulary.pdf
GB-T 1695-2005 硫化橡胶 工频击穿电压强度和耐电压的测定方法.pdf
GB-T 747-2003 纸浆 酸不溶木素的测定.pdf
GB-T 2550-2016 气体焊接设备 焊接、切割和类似作业用橡胶软管.pdf
GB-T 7378-2012 表面活性剂 碱度的测定 滴定法.pdf
GB-Z 31102-2014 软件工程 软件工程知识体系指南.pdf
GB-T 24232-2009 锰矿石和铬矿石 校核取样和制样偏差的试验方法.pdf
GB-T 1735-2009 色漆和清漆 耐热性的测定.pdf
GB-T 26738-2011 道路车辆 制动衬片摩擦材料 产品确认和质量保证.pdf
GB-T 4956-2003 磁性基体上非磁性覆盖层 覆盖层厚度测量 磁性法.pdf
GB-T 23802-2015 石油天然气工业 套管、油管和接箍毛坯用耐腐蚀合金无缝管交货技术条件.pdf