Determination of certain substances in electrotechnical products. Part 4. Mercury in polymers, metals and electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS
Trunk pipeline transport of oil and oil products. Uninterruptible power supply units of systems auxiliary systems and automation systems. General specifications
Low voltage distribution systems up to 1000 V a. c. and 1500 V d. c. Electrical safety. Equipment for testing, measuring or monitoring of protective measures. Part 3. Loop impedance
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