Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
motorized [ˈməutəraɪzd] adj
motorized transport автотра́нспорт
motorized vehicle автомаши́на
motorized regiment моторизо́ванный полк#
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.