标题: GWD11 马上就考了 大家帮帮忙吧 [打印本页] 作者: LeannaChina 时间: 2011-2-16 22:08 标题: GWD11 马上就考了 大家帮帮忙吧 Q31: Under high pressure and intense heat, graphite, the most stable form of pure carbon, changes into the substance commonly referred to as diamond and remaining this way whether or not the heat and pressure are removed.