
语文学习系统通用技术条件
General specification for language learning systems
General specification for language learning systems
The methods of measurement for image-converter tubes and image intensifier tubes
Prosthetics and orthotics-Vocabulary Part 2:Terms relating to external limb prostheses and wearers of these prostheses
General rules for Selection And using of packaging materials with volatile corrosion inhibitor
Electroacoustics-General specification for hearing aids
Rules for filling of compressed gas cylinders
Sponge platinum
Prosthetics and orthotics-Vocabulary-Part 4:Terms relating to limb amputation
Preferred matching values for the interconnections of audio,nvideo and audiovisual systems
Incandescent lamps-Safety specifications-Part 3:Tungsten-halogen lamps (non-vehicle)