direct reduction ironmaking
direct reduction ironmaking
直接还原炼铁
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The current development, process and technical characters of main smelting reduction technologies for direct ironmaking were discussed.
阐述了几种熔融还原技术的工艺流程、技术参数和特点及其最新进展。
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