Nevertherless, basicoxygenfurnace 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。？
2
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。
3
Most of the steel for line pipe is made by open-hearth, electric furnace, and basic-oxygen processes.