Engineer, Industry
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17-May-2024 Friday
Rationalization proposals of Soviet citizens to the People's Commissariat of Defense of the USSR


IceLifeSun
 
Rationalization proposals of Soviet citizens to the People's Commissariat of Defense of the USSR
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Youtube YouTube (link) Video Military equipment Military War Idea Inventors Inventions Engineer The science Industry Made in USSR Technics The photo Drawing

17-May-2024 Friday
Energy efficiency class in lighting


svetodiod27
 
Energy efficiency class in lighting
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Led Lighting Engineer Research Lighting Luminosity Industry Lighting Calculation Building Technologies Street lighting
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