In addition, with the progress of metallurgical technology and the increases of continuous casting capabilities, refining technology of externalfurnace is applied widely.
此外，随着冶金技术的进步，连铸比增加，各种炉外精炼技术被广泛地应用。
2
Structure and control system of an external heated vacuum furnace are introduced in detail.
本文详细介绍了一台外热式真空炉的结构和控制系统。
3
External heat exchanger is generally used in large-scale circulating fluidized bed boiler to adjust furnace temperature and working material temperature.