I-valve ye-butterfly yekhwalithi ephezulu: ukulawulwa kwezinga lokushisa okunembayo okuphezulu, imininingwane inquma ikhwalithi yokukhiqiza
I-valve ye-butterfly yekhwalithi ephezulu: ukulawulwa kwezinga lokushisa okunembayo okuphezulu, imininingwane inquma ikhwalithi yokukhiqiza Ekukhiqizeni kwezimboni zanamuhla, ukulawulwa kwezinga lokushisa okuqhubekayo kuyingxenye ebaluleke kakhulu. Ikakhulukazi kwezemithi, ukudla, amakhemikhali nokunye...
buka imininingwane