Answer
Ubuzima bw'umunaniro w'isoko y'amazi bufitanye isano rinyuranye nurwego rwo guhangayika $ \ Delta \ sigma $ inararibonye mugihe cyamagare. Kuva $ \ sigma \ propto D_m / (b t ^ 2 N_w ^ 2) $, hagati ya diameter igira uruhare runini. Kongera $ D_m $ kumutwaro uhamye $ P $ mubyukuri byongera umwanya wo kugunama hamwe nibibazo bivamo. Ukoresheje isano ya Goodman, $ \ frac {\ sigma_a} {S_e} + \ frac {\ sigma_m} {S_u} = 1 $ (aho $ \ sigma_a $ ihinduranya imihangayiko, $ \ sigma_m $ bisobanura guhangayika, $ S_e $ ni imipaka yo kwihangana, kandi $ S_u $ ni imbaraga zingana cyane kugirango bagabanye diameter. Mubibaya byo munsi yinyanja aho kwizerwa kwigihe kirekire aribyo byingenzi, umubare munini wumuraba $ N_w $ ukunze gukundwa kurenza $ D_m $ kugirango ugabanye imihangayiko kuri buri muhengeri kandi wongere ubuzima bwikizunguruka mu $ 10 ^ 6 $.
