Daɣ immik wa s iddikud n titbaqqa ijjan amutti n iddikud n ahishk
Ehan eqal aśohen əd aśohatnen, atamosan dǎɣ aśuhu ənes. Iddikud n amutti, efes meɣ afanaz izlay i ichikilan win karad n titbaqqet Timitikwayen tin aqqalan longitudinal, radial d tangential Tišijrit taqqal titbaqqet s eɣaf n ihishkan meɣ ifrinkittan net idwalan s tišijrit Daɣ timizdaɣ ajjotnen, awen eqqal tišijrit net Amutti daɣ titbaqet ten eqqal andarran Awen eqqal iddilil n axadam n timizdaɣ war n amutti iddikud tan nasan alwaq wa id amutti n tewaɣne n ahinzazaɣ Daɣ alxidmaten fuk, tiw-at d tiw-at n taɣelit aqqalan madroynen i ad war eqqel derhan Ajen d afanaz wan radial d tangential iknan assahat tolas izlay hullan i ad ikrichan alisteɣmar n iddikud n tahunkit Iddikud n amutti daɣ titbaqet fuk eqqal a izlayan i ich-ikilan n ihishkan Daɣ awa id eqqalan ichikilan n ihishkan, amutti eqqal a maqqoran daɣ tangential direction ohun daɣ radial direction Edag wan tangential eqqal tangential i tijililwăyen n tiw-at daɣ ahishk tolas edag wan radial eqqal perpendicular i tijililwăyen n tiw-at T/R meɣ ratio n tangential s radial amutti osaɣ id iddikud n anmizlay n ich-ikilan n ihishkan A fal tijja tasaga n achrut n ahishk eqqalan a ogdahan tolas id izjaran s achrut n achrut chund as ifrinkittan aqqalan a oɣadan daɣ edag iyyan, awen isim net amatikway n tadlimt meɣ achrut n achrut n tadlimt Alwaq wa id iddikud n arori n ahishk itiki s tigdaht id ahinzazaɣ net, ad ikrich s dumu n almas A ogaran tarədawt ən amsədu ən T/R eqalan 1, ogaran tajute ən amsədu ən tajute ən aɣalay. Iddikud n iddikud d almaɣna n amatikway n ahishk assohen i asidu alwaq wa id itkadan timitikwayen daɣ ahishk A fal issin ichrutan idasnen war addoben amutti daɣ tasdik iyyat daɣ majrad, majrad ad ifnaz alwaq wa id amutti n arori n ahinzazaɣ tolas addobat ad eqqil iddilil n majrad