Ngokwevolumu yomoya, singakwazi ukuhlukanisa umoya opholile wezimboni ngevolumu yomoya engu-18,000, 20,000, 25,000, 30,000, 50,000 noma ngaphezulu. Uma siyihlukanisa ngohlobo lweyunithi eyinhloko, singayihlukanisa ibe izinhlobo ezimbili: amayunithi eselula namayunithi ezimboni. Iyunithi yeselula ilula kakhulu. Ungasebenzisa...
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