Transmission of audio and/or video and related signals using infra-red radiation. Part 3. Transmission systems for audio signals for conference and similar systems
Occupational safety standards system. Means for personal protection of hands. Protective gloves against chemicals and micro-organisms. Part 5. Terminology and performance requirements for protective gloves against micro-organisms
System of standards for technological arrangement. Attachments for metal-cutting machines tools. Control readjustable mandrels with corrugated bushings for precision machining. Basic parameters and dimensions
