State system for ensuring the uniformity of measurements. State special standard and state hierarchy diagram for variable pressure measuring instruments in the range of 1x10 in 2 degree to 1x10 in 6 degree Pa for frequencies of 5x10 in minus 2 degree to 1x10 in 4 degree Hz, durations from 1x10 in minus 5 degree to 10 s under constant pressure up to 5x10 in 6 degree Pa
Plugs and socket-outlets for household and similar purposes. Part 2. Particular requirements for plugs and socket-outlets for SELV and methods of tests
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