In spite of their diversity, interactions between solitons, through which many particle-like features of solitons are exhibited, all follow the same principles.

Cultural diplomacy is an effective approach of diplomacy, which plays a role of promoting mutual understanding and trust among nations and peoples, constructing and improving the international prestige and soft power of a state.

The present paper,based on the speech act theory and conversation analysis,attempts to investigate the relationship between speech acts and mutual understanding from the illocutionary logic of the sequential structures in conversation.

The discussion is concentrated on pore structure, surface morphology, features and distribution of surface sites of carriers, metal-support interaction and its effect on dispersion of active components (metals) of catalyst surfaces and activity of the catalysts, the effects of promoters and additives, modification of metal-support interactio.