Balaastik caag ah oo leh Gacan, Qalinjabisay

Koobka cabbiraaddu waa aaladda cabbirka (astaanta Ex) aaladda wax lagu cabiro, oo loo isticmaalo in lagu cabbiro mugga dareeraha ka soo baxay aaladda cabirka. Muga dareeraha la soo daayay waa tirada mugga ee laga akhrinayo qiimaha cabirka marka dareeraha uu ku jiro aaladda cabirka.
noocyada
1, koob caag ah oo lagu cabbiro
Koob daawo qalin ah ama koob qaybinta, oo loo isticmaalo tijaabooyinka kiimikada ama hawlgallada kale ee baaritaanka. Miisaanka koobka cabbiraadda si siman ayaa loo qaybiyey, masaafada u dhexaysa miisaanka ayaa sii yaraanaysa markay kor u kacdo.