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State system for ensuring the uniformity of measurements. National standard. Standard reference data. Tellurian glasses of system TeO2 + R2O and their fusions. Thermal conductivity in the temperatures range from 300 K to 800 К and concentration of oxides of alkaline R2O
Fire equipment. Self-rescue filtering devices for protection of children from 1,5 to 7 years old against toxic products at rescue from smoking buildings during fire. General technical requirements. Test methods
