Yara mimọ yatọ ni apẹrẹ ṣiṣan afẹfẹ ni ibamu si awọn onipò oriṣiriṣi.Ni gbogbogbo, o le pin si ṣiṣan laminar inaro (Class1-100), ṣiṣan laminar petele (Class1-1,000), ati ṣiṣan rudurudu (Class1,000-100,000).Iyatọ alaye jẹ bi atẹle: Ọna Isọfẹ Afẹfẹ Wiwa Win…
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