NBN-EN 27566-1992 2500 《声音 标准的零度参考值用于听力器校准，在纯净的声音中通过骨质传导》.pdf

相关资源

NBN E 18-001-1976 2500 《通过热电偶的比较进行的校准》.pdf

NBN T 97-101-1979 1875 Preparation of calibration gas mixtures - Weighing method《校准混合气的配制 称重法》.pdf

NBN T 97-104-1979 5625 Preparation of gas mixtures for calibratlon using permeation tubes《用渗透管配制校准混合气》.pdf

NBN T 97-102-1979 3125 Preparation of calibration gas mixtures - Manometric method《校准混合气的配制 测压法》.pdf

NBN T 97-107-1980 8750 Preparation of calibration gas mixtures using plastic bags《用塑料袋配制校准混合气》.pdf

NBN X 50-006-1988 6875 Quality assurance - Requirements for measurement and calibration Systems《质量保证 测量和校准系统的要求》.pdf

NBN T 97-103-1979 1250 Preparation of calibration gas mixtures - Method with mixing piston pumps《校准混合气的配制 混合活塞泵方法》.pdf

NBN E 17-005-1988 9375 《流量测量仪器的使用和校准中的不精确性的估计》.pdf

NBN T 97-106-1980 4375 Preparation of calibration gas mixtures - Preparation and or analysis certificate《校准混合气的配制 配制和（或）化验证书》.pdf

NBN T 97-110-1983 5625 Gas analysis - Preparation of calibration gas mixtures - Static volumetric methods《气体分析 校准混合气的配制 静态容积法》.pdf

猜你喜欢

NBN T 04-213-1983 1250 Phthalsaureanhydrid fur technische Zwecke - Messung der Farbestabilitat Phthalic anhydride for industrial use - Measuretnent of colour stability《工业用酞醛 色彩稳定性的.pdf

NBN T 04-214-1983 5625 Phthalic anhydride for industrial use - Measurement of colour after treatment with sulphuric acid《工业用酞醛，硫酸处理后颜色的测定》.pdf

NBN T 04-215-1983 8750 Phthalic anhydride for industrial use - Determination of free acidity-Potentiometric method《工业用酞醛 游离酸的测定 电势法》.pdf

NBN T 04-216-1983 3125 Phthalic anhydride for industrial use - Determination of phthalic anhydride content - Titrimetric method《工业用酞醛 酞醛含量的测定 滴定法》.pdf

NBN T 04-217-1983 7500 Phthalic anhydride for industrial use - Determination of maleic anhydride content - Polarographic method《工业用酞醛 顺丁烯二酸酐含量的测定 极普法》.pdf

NBN T 04-218-1983 4375 Phthalic anhydride for industrial use - Determination of ash《工业用酞醛 灰分测定》.pdf

NBN T 04-219-1983 0000 Phthalic anhydride for industrial use - Determination of impuries oxidizable in the cold by potassium permanganate - Iodometric method《工业用酞醛 用高锰酸钾冷却的可氧化杂质的测定.pdf

NBN T 04-220-1983 8750 Phthalic anhydride for industrial use - Determination of 1 4-naphthaquinone content - Colorimetric method《工业用酞醛 萘醌1 4含量的测定 比色法》.pdf

NBN T 04-221-1983 4375 Phthalic anhydride for industrial use - Determination of iron content-2 2--Bipyridyl photometric method《工业用酞醛 铁含量的测定 2 2-联吡啶光度测定法》.pdf