Specialized liquid compositions for generation of the hardening and fast-hardening fire-extinguishing foams. General technical requirements. Test methods
State system for ensuring the uniformity of measurements. State verification schedule for instruments measuring the content of components in liquid and solid substances and materials. Transfer of the units from the State Primary Standard based on coulometry
State system for ensuring the uniformity of measurements. State verification schedule for means measuring the attenuation of electromagnetic oscillation within the frequency range from 0 to 178 GHz
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