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1991 year China issued GB standards list

GB/T 3277-1991
Corrugated steel plates with lath and lentilform
GB/T 13241-1991
Iron ores--Determination of reducibility
铁矿石 还原性的测定方法
GB 13114-1991
Hygienic standardfor polyethylene terephthalate resin used as food containers and packaging materials
GB/T 13300-1991
High resistance alloys for electrical heating--Testing method for accelerated life
GB/T 12846-1991
General specification for pulse thyratrons
脉冲闸流管总规范 (可供认证用)
GB 13132-1991
Code of Chinese ideogram set for information interchange--The 5th supplementary set
信息交换用汉字编码字符集 第五辅助集
GB/T 12807-1991
Laboratory glassware--Graduated pipettes
实验室玻璃仪器 分度吸量管
GB/T 12752-1991
General specification for marine Loran-C receiving equipment
GB/T 12921-1991
Marine oil-water interface detector specification
GB/T 12855-1991
Application and care for small power transmitting tubes
GB/T 13325-1991
Noise emitted by machinery and equipment--Guidelines for the preparation of test codes of engineering grade requiring noise measurements at the operator’s or by stander’s position
机器和设备辐射的噪声 操作者位置噪声测量的基本准则 (工程级)
GB/T 12767-1991
Powder metallurgy products--Surface roughness--Parameters and their values
粉末冶金制品 表面粗糙度 参数及其数值
GB/T 12810-1991
Laboratory glassware--Volumetric glassware--Methods for use and testing of capacity
实验室玻璃仪器 玻璃量器的容量校准和使用方法
GB 13113-1991
Hygienic standard for polyethylene terephthalate products used as food containers and packagingmaterials
GB 12711-1991
Standard of safety for low and intermediate-level solid radioactive waste packages
GB/T 12808-1991
Laboratory glassware--One-mark pipettes
实验室玻璃仪器 单标线吸量管
GB/T 12992-1991
Measuring methods of thermal characteristic for forced air cooling of electronic equipment
GB/T 13247-1991
Ferroalloys--Sampling and testing methods for determination of grain size
GB/T 12809-1991
Laboratory glassware--Principles of design and construction of volumetric glassware
实验室玻璃仪器 玻璃量器的设计和结构原则
GB/T 13193-1991
Water quality--Determination of TOC by nondispersive infrared absorption method
水质 总有机碳(TOC) 的测定 非色散红外线吸收法

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