open-hearth furnace

基本解释

Steel making in the open-hearth furnace is a very slow process, much slower than the Bessemer one.
平炉炼钢是一个很慢的过程，比转炉炼钢慢得多。
Most of the steel for line pipe is made by open-hearth, electric furnace, and basic-oxygen processes.
大部分建管道用管子的钢材由平炉、电炉和碱性顶吹转炉生产。
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The tube bloom made by this method has given out the same physical and chemical test results as that made by basic open-hearth furnace +vacuum degassing process+ESR process.
采用碱性平炉+ESR（电渣重熔）法生产高强韧管坯，能完全满足管坯的各项技术要求，各项理化检测结果与采用碱性平炉+真空除气+ESR法生产的同类管坯水平基本相当。

(esp formerly) a steel-making reverbatory furnace in which pig iron and scrap are contained in a shallow hearth and heated by producer gas