robert livingston stevens

الإنجليزية - الإنجليزية

تعريف robert livingston stevens في الإنجليزية الإنجليزية القاموس.

born Oct. 18, 1787, Hoboken, N.J., U.S. died April 20, 1856, Hoboken U.S. engineer and ship designer. The son of John Stevens, he tested the first steamboat to use screw propellers. He designed the railway T-rail in 1830, and later the railroad spike. He found that rails laid on wooden ties, with crushed stone or gravel beneath, provided a roadbed superior to any known before; his construction remains in universal use

الواصلة

Rob·ert Li·ving·ston Ste·vens

التركية النطق

räbırt lîvîngstın stivınz

النطق

/ˈräbərt ˈləvəɴɢstən ˈstēvənz/ /ˈrɑːbɜrt ˈlɪvɪŋstən ˈstiːvənz/