His life was saved by a quarter-inch-thick bullet-proof steel screen.多亏一块1/4英寸厚的防弹钢板，他才捡了条命。Steel cable will be used to replace worn ropes.将用钢缆替换磨损的绳索。In the course of the 1930s steel production in Britain approximately ...
...a steel mill.钢铁厂The V - N microalloy steel with yield strength of 550 MPa is produced by EAF - CSP route.目前,在EAF-CSP 流程中通过V -N 微合金化技术可成功生产屈服强度为550MPa的高强度低合金钢.This accomplished by mounting the elements on a heavy steel...