The construction of oval culverts is introduced, the mechanism of arch pieces, destruction is simply analyzed in construction process,and the matters in need of attention about the construction are clarified in this article.

The egg-shaped arch culvert is applied to bear vast earth pressure under high filling because it has good compressive capability.

The egg types of Calanus sinicus in Xiamen Harbor of China;

Numerical methods for hypersonic flow with chemical non-equilibrium reactions on the unstructured grid are used to analyze the drag induction of channel-configurations.

By using the concept model theory and analyzing the result of semantic analysis,the right connotation model can be transferred,corresponding to the connotation model,collecting the information from the result of semantic analysis to embody abstract concept,based on which dig over the information then reducing it according to the.

RL-type implication and Triple-I algorithm in Fuzzy reasoning;