普通低合金钢,是在普通炭素钢中加入少量的硅、锰、稀土、钼、钒、铜、铝、铌等元素,用一般的方法冶炼而成。它的生产是钢铁产品的伟大革命,它的使用与推广具有重大的政治意义和经济意义。“我们的方针要放在什么基点上?放在自己力量的基点上,叫做自力更生。”但是,叛徒、 Ordinary low-alloy steel is made by adding a small amount of elements such as silicon, manganese, rare earth, molybdenum, vanadium, copper, aluminum, and niobium to common carbon steel and smelted by ordinary methods. Its production is a great revolution in steel products. Its use and promotion have major political and economic significance. “What is the basic point of our policy? It is based on our own strength, called self-reliance.” But the traitor,