Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures. Part 5. Resistance to earth
State system for ensuring the uniformity of measurements. Disperse composition of aerosols and suspensions. Determination of particle size by laser diffraction
Industrial furnaces and thermal units. Rules of organization and manufacturing operations, monitoring of implementation and requirements for the results of works
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