Plugs and socket-outlets for household and similar purposes. Part 2-6. Particular requirements for switched socket-outlets with interlock for fixed electrical installations and methods of tests
State system for insuring the uniformity of measurements. State primary special standard and national chain of traceability for volumetric and mass oil flow metering instruments
Electromagnetic compatibility of technical means. Frequency bandwidth and off-band emission requirements of radiotransmitters. Test and control methods
€10
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