dustan bande be in kotob niz niyaz daram,moteasefane khodam natunestam peyda konam,age kasi tunest peyda kone vasam,azash mamnun misham,ghol midam ke vasatun ketabe convection heat transfer va solutionesh va ketabe convection dar mohite motekhalkhelesh ro bezaram lotfan komak konid behem
Entropy...