北京科技大学教授孙一康自主开发底层系统省千万美元户就被迫一是用高价购买原系统的备件,二是每过10～15年就不得不重新成套引进新系统。1989～1992年,武钢1700热连轧在国内首次采用“硬件系统引进,应用软件自主开发”的方针,使整个系统的造价节省了50%以上,而1997年～2001年 Sun Yikang, a professor at Beijing University of Science and Technology, independently developed the underlying system to save tens of millions of US dollars. He was forced to purchase spare parts for the original system at a high price. Second, he had to reintroduce new systems every 10 to 15 years. From 1989 to 1992, the 1700 hot strip mill of WISCO adopted the principle of “introduction of hardware system and independent development of application software” in China for the first time, saving the cost of the whole system by more than 50% from 1997 to 2001