Lub tshuab nqus tsev vacuum yog ib qho khoom siv tseem ceeb hauv kev lag luam niaj hnub no. Nws tuaj yeem siv cov txheej txheem nyuaj uas tsis tuaj yeem ua haujlwm los ntawm lwm yam khoom siv kho cua sov, uas yog lub tshuab nqus tsev quenching thiab tempering, lub tshuab nqus tsev annealing, lub tshuab nqus tsev tov thiab lub sijhawm, lub tshuab nqus tsev ...
Nyeem ntxiv