Mu nganda n’ubucuruzi, moteri yamashanyarazi ningirakamaro kumashini zitwara, ibikoresho, na sisitemu zunganira ibikorwa byinshi. Izi moteri akenshi zikoreshwa na sisitemu y'amashanyarazi yibice bitatu, igenewe gutanga amashanyarazi ahoraho kandi aringaniye kugirango imikorere ya moteri ikore neza kandi neza. Nyamara, ikibazo rusange gishobora kuvuka muri sisitemu ni gutakaza icyiciro cya moteri, gishobora gukurura ibibazo bikomeye byimikorere, harimo kugabanya imikorere, kwangiza ibice bya moteri, ndetse no kunanirwa na moteri byuzuye.