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一年来很多小高炉经过技术改造,巳逐步变为小洋炉。关于温度和压力的测量,早巳有成熟的简单的测量方法,但关于质量的测量,还须进一步研究改
Over the past year many small blast furnace through technological innovation, have gradually become a small ocean furnace. There are already mature and simple methods of measuring temperature and pressure, but further research on the measurement of mass