Based on the core theory of structuralism and bilateral opposite structure,the crying marriage customs and songs in Yuexi area are analyzed in order to get a clear understanding about them.

By via of applying self-designed experimental system for flame acceleration and choosing five different solid structure obstacles,the paper investigated solid structure obstacles effect on flame speed and overpressure of premixed methane.

On the basis of these theories,a pore channel-dual electric layer model with stereo-structure is established.

The three-dimensional stereo structure of this kind of crystal compound is reported for the first time, which provides the reliable data of the molecular stereo-structure for the research of activation and structure of Maceryatal B's molecule.

For a long time, chemists have considered that there is no relationship between the optical activity of compounds under sodium D line (589 nm) and their stereostructure, and often took the optically active change of lactic acid and its derivatives (with the same configuration) as an example.