19世纪60年代一个深冬的夜晚，横跨在比利时北部山间峡谷上的一座铁侨，在一声巨响中突然断裂，倒塌在已经封冻的江面上。在炼铁业发展以前，人们都是用石快、砖头或木头架桥的，兰炼铁业发展以后，英国一位各叫威尔舍森的钢铁企业家认为，钢铁具有无比的拉刀和抗压刀，又能在 A winter night in the 1860s, an ironcore across the mountain canyon in the north of Belgium suddenly fractured in a loud crash and collapsed on a frozen river. Before the development of ironmaking industry, people used stone, brick, or wood bridges. After the development of the ironmaking industry in Lanzhou, a British steelmaker named Wilhelmson thought that the steel has incomparable broaches and Anti-pressure knife, but also in