As an example, Prof.Prescott points to what happened in Northern Minnesota on the Iron Range in the 1980s.
普雷斯科特教授以上世纪80年代美国明尼苏达州北部铁矿地带为例。
On its way, the iron bullet expanded, gripping the spiral rifling and spinning so tightly along its course that its range and accuracy were greatly increased, with fewer misfires.
弹头（在枪膛中）的前进过程中，铁制子弹（此处指底座上的铁质闭锁，也有使用软木制作闭锁的——译注）会膨胀，紧咬住螺旋形的膛线，使得射程和精准度都大大增加，同时减少子弹死火。
So the correct carbon steel forging temperature range does not include industrial pure iron.
碳钢正确的锻造温度范围应不包括工业纯铁。
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