1, lub taub qab vuam flange annealing kub yog mus txog qhov ntsuas kub, taub qab vuam flange kev kho mob feem ntau yog siv tshuaj kho cua sov, uas yog, tib neeg feem ntau hu ua "annealing", qhov kub ntau yog 1040 ~ 1120 ℃. Koj tseem tuaj yeem soj ntsuam los ntawm lub tshuab hluav taws xob annealing observa ...
Nyeem ntxiv