Knowledge spillover refers to the fact that the knowledge receiver merges the acquired knowledge with his own knowledge to obtain new knowledge, but does not give the knowledge provider compensation, so the provider does not enjoy the full benefits of the original knowledge, or the compensation given is less than The cost of knowledge creation, a phenomenon in which the recipient consciously or unconsciously does not bear the full cost of knowledge. According to the above definitions, the following are knowledge spillovers:. ['Students have learned problem-solving methods and skills from the tutorial class, and can proficiently answer this type of problem.', "A company represents the production and sales of well-known foreign electronic products, and then introduced a production line to support the charging equipment for the production of this electronic product, which greatly increased the company's efficiency.", "c. A company works with overseas research institutions to introduce each other's technology to develop a new product, and the two parties agree to share property rights and benefits.", "A city design agency participated in the regular scheme of another large city, and designed the new district transportation network based on the city's original design scheme and actual conditions."]