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 7. Phase sequence
Porous aggregates for light concretes used in the construction of oil and gas offshore structures. Recommendations for improving operational properties
State system for ensuring the uniformity of measurements. Contact (stylus) instruments for the measurement of surface roughness. Metrological characteristics of correct filters
