State system for ensuring the uniformity of measurements. State special standard and state verification schedule for means of measuring magnetic induction of constant field in the range of 2-10 T for temperature range from 4,2 to 300 K and from 0,1 up to 2 T for the range from 4,2 to 77 K
Civil defense. Engineering and technical equipment of protective structures of civil defense. Fans with electric drive. General technical requirements. Test methods
