State system for ensuring the uniformity of measurements. Standard reference data. The thermalconductivity of La2Te3 – La3Te4 solid solution in the temperature range from 80 K to 400 K
Occupational safety standards system. Personal respiratory protective means. Self-contained open-circuit compressed air breathing apparatus incorporating a hood for escape. Technical requirements. Test methods. Marking
State system for ensuring the uniformity of measurements. Compensated fluid micromanometers with micrometric screw, type MKV-250 . Methods and means of verification
