Society is used to connecting science and technology, collectively referred to as science and technology, or science and technology for short. In practice, the two are closely related and have important differences. Solve theoretical problems scientifically and solve practical problems with technology. The problem to be solved by science is to discover the relationship between conclusive facts and phenomena in nature, and establish a theory to connect facts and phenomena; The task of technology is to apply scientific achievements to practical problems. Science mainly deals with unknown fields, and its progress, especially major breakthroughs, is unpredictable; Technology works in a relatively mature field and can make more accurate predictions.