Some symmetric mathematical models, such as Tech-Tech or Tech & Market - Tech & Market, had been set up in the researches of theoretical models of cooperative behavior among firms in strategic alliances. An asymmetric model is established in this paper by discussing the Tech-Market type strategic alliances and expressing the strength contrast between the partners in an alliance by the Bass diffusion models. The benefits changes of alliances partners are studied in several different occasions, and the model about the influences of learning upon partnership is built by introducing the learning mechanism to retrofit the Bass models. Then it is proved that the learning mechanism possesses strategic significance to the partnership, that is to say, the development of an alliance is beneficial to the partner who has higher learning efficiency and unfavorable to the other one. At the same time, the original cause of the strategy, i.e., gaining foreign investment and technology by let foreign firms own some domestic market share, was not work well in last ten years in China, has been revealed. It is pointed out that China's firms should do their best to improve their learning efficiency when they participate in the international alliances.