a设备管理。 Equipment management.[translate] a起床之后,我在看《钢铁是怎样炼成的》,看了2个小时 After gets out of bed, I was looking "How Steel and iron Is Builds up", looked for 2 hours[translate]
Carbon steel is a type of steel made from iron and a tiny amount of carbon (2% to be exact). Iron is quite soft in its pure form, yet by blasting it in a furnace, it becomes hard. However, this process results in the iron becoming more brittle at the same time due to the high...