bright yellow heat(【技】金属加热到发出亮黄色时的温度。一般而言，不同的金属加热到亮黄色时的温度是不相同的。: If pure iron is gradually heated from room temperature to bright yellow heat, but not melted, the arrangement of the iron atoms changes from body-centred to face-centred cubic at 906°C. 如果将纯铁逐步从室温加热到亮黄色温度，但又未熔化，那么铁原子的排列就会在 906°C 时由体心立方晶格转变为面心立方晶格。)
silver steel(Silver steel contains no silver； it is the appearance of the metal which gives it this familiar name. 银亮钢并不含有银，而是由于它具有银一样光亮的外观而得到了这个广为流传的名称。)
