The key technique of hot rolling low carbon ultra-fine grained steel strip consists in controlled rolling and controlled cooling.

细晶粒低碳钢生产的关键技术在于控轧控冷。

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The invention discloses a method for preparing high-strength and high-plasticity ultra-fine grained ferrite and nano-carbide low-carbon steel.

本发明公开一种高强度高塑性超细晶铁素体和纳米碳化物低碳钢制备方法。

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In the grit of fine-grained mudstone, the scientists identified sulfur, nitrogen, hydrogen, oxygen, phosphorus and carbon some of the key chemical ingredients for conditions suitable for life.

WSJ: Scientists Say Microbial Life Was Possible on Mars