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phoiB.C5.thoi gian nung in GCAL

phoiA.C10.pp xac dinh vl nau chay gang xam

phoiB.C9.chu y khi thet ke khuon

phoiB.C6.cac nguyen cong ren tu do

phoiB.C1.nhan to anh huong

phoiB.C3.dinh luat co ban trong GCAL

phoiB.C4. nhiet do GCAL thep Cacbon

phoiB.C8.phan loai dap the tich

phoiB.C7.thiet ke vat ren tu do

phoiB.C2.AH cua bd deo den tc va tc của kl