salt bath furnace
... root cutter 块根切碎机, 切根机 salt bath furnace 盐溶炉 seam welder 滚焊机, 缝焊机 ...
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坩埚盐溶炉 crucible-type salt bath furnace ; type salt bath furnace
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热处理1949年前，北京已采用电炉、盐溶炉、热电偶等手段进行零件退火、回火、淬火、正火、调质、渗碳等热处理。
Before 1949, Beijing has heat treatment furnace, salt dissolved by thermocouples means furnace, quenching and tempering, parts of annealing, normalizing, quenching and tempering, carburizing and etc.
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