专利 一种拆装方便的LED显示屏
ISO 12671 2021 Thermal spraying — Thermally sprayed coatings — Symbolic representation on drawings.pdf
ISO 9308-2 2012 Water quality — Enumeration of Escherichia coli and coliform bacteria — Part 2 Most probable number method.pdf
ISO 15877-3 2009 Plastics piping systems for hot and cold water installations — Chlorinated poly(vinyl chloride) (PVC-C) — Part 3 Fittings.pdf
ISO 9735-10 2022 Electronic data interchange for administration, commerce and transport (EDIFACT) — Application level syntax rules — Part 10 Syntax service director.pdf
ISO 27914 2017 Carbon dioxide capture, transportation and geological storage — Geological.pdf
ISO 9241-5 1998 Ergonomic requirements for office work with visual display terminals (VDTs) — Part 5 Workstation layout and postural requirements.pdf
ISO TS 13907 2012 Soil quality — Determination of nonylphenols (NP) and nonylphenol-mono- and diethoxylates — Method by gas chromatography with mass selective detection (GC-MS).pdf
ISO 4885 2018 Ferrous materials Heat treatments Vocabulary.pdf
ISO 5011 2020 Inlet air cleaning equipment for internal combustion engines and compressors Performance testing.pdf
ISO 11513 2019 Gas cylinders — Refillable welded steel cylinders containing materials for sub-atmospheric gas packaging (excluding acetylene) — Design, construction, testing, use and periodic inspection.pdf
GB-T 12775-1991 电子设备用圆片型瓷介预调可变电容器总规范.pdf
GB-T 41485-2022 核仪器仪表 地球物理密度测井仪.pdf
GB-T 18311.6-2001 纤维光学互连器件和无源器件 基本试验和测量程序 第3-6部分 检查和测量 回波损耗.pdf
GB-T 27025-2019 检测和校准实验室能力的通用要求.pdf
GB-T 9043-2008 通信设备过电压保护用气体放电管通用技术条件.pdf
GB-T 42827-2023 家用和类似用途的交流换气扇及其调速器 性能测试方法.pdf
GB-T 27418-2017 测量不确定度评定和表示.pdf
GB-T 16810-2006 保险柜耐火性能要求和试验方法.pdf
GB-T 2900.35-2008 电工术语 爆炸性环境用设备.pdf
GB-T 33994-2017 信息和文献 WARC文件格式.pdf