Nevertherless, basic oxygen furnace process with heated ladle refining and vacuum degassing may also be considered as acceptable.
不过，带加热钢水包精炼及真空除气的氧气顶吹转炉工艺也可接受。？
Basic structure of RH furnace multifunctional oxygen lance, composition of control system, main functions and control process of the oxygen lance are introduced, and control index is given.
重点介绍rh炉多功能氧枪的基本结构，控制系统构成，氧枪主要功能、控制流程等，并给出了控制指标。
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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