State system for ensuring the traceability of measurements. Gas analyzers and gas alarm devices for determination of combustible gases and vapors in working zone air. Testing method
External utilities. Еlectrical installations. Cables with plasti cinsulating material for 35 kV including, laying in earth (in tube ditch). Work performancerules
Tractors and agricultural machines. Hardware-software system for automated control of highly automated machine-tractor units. Technical requirements and test methods
