This paper analysed the evolution of ironmaking production and discussed the effect of blast furnace and its prospect.
分析炼铁生产的演变过程，讨论高炉的作用及其发展前景。
NASA's solar-powered Juno spacecraft is ready to blast off Friday on a landmark mission to Jupiter aimed gaining new insight into the origin and evolution of the solar system's largest planet.
美国航空航天局的太阳能航天器“朱诺号”已经为星期五前往木星的极具里程碑意义的发射升空作好准备。“朱诺号”此行的使命是进一步了解木星这个太阳系最大行星的起源和进化情况。
NASA's solar-powered Juno spacecraft is ready to blast off Friday on a landmark mission to Jupiter aimed gaining new insight into the origin and evolution of the solar system's largest planet.
美国航空航天局的太阳能航天器“朱诺号”已经为星期五前往木星的极具里程碑意义的发射升空作好准备。“朱诺号”此行的使命是进一步了解木星这个太阳系最大行星的起源和进化情况。
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