air-measurement book


air-measurement book
вентиляционный журнал

English-Russian dictionary of geology. 2011.

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  • Iridium — (pronEng|ɪˈrɪdiəm) is a chemical element that has the symbol Ir and atomic number 77. A very hard, brittle, silvery white transition metal of the platinum family, iridium is the second densest element and is the most corrosion resistant metal,… …   Wikipedia

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