According to need, furnace atmosphere, protective atmosphere or vacuum can be a normal atmosphere.

根据需要，炉内气氛可以是普通气氛、保护气氛或真空。

youdao

According to need, furnace atmosphere, protective atmosphere or vacuum can be a normal atmosphere.

根据需要，炉内气氛可以是普通气氛、保护气氛或真空。

youdao