Firstly, the thesis amends the assumption of SDC model, because SDC model believes the competitor will not make a spillover.The thesis finds the new characteristics of strategic technology spillover.

• 一是修正了SDC模型假设，论文通过分析指出原模型对第二阶段竞争对手技术溢出行为的忽略，从而通过修正重新推定了策略性技术溢出的特性；