30CrMnSiA可控气氛热处理
30CrMnSiA controlled furnace inside atmosphere hea
惰性气氛及压强
Inert gases and their pressures
可控气氛保护
controlled atmosphere protect
可控气氛多用炉
controlling atmosphere multi-purpose furnace
可控气氛复合
controlled atmosphere bonded
可控气氛复合法
controllable atmosphere bonding method
可控气氛辊底式连续退火炉
controlled atmosphere roller-hearth continuous annealing furnace