By testing the concentration of unsaturated double bond in residues while synthesizing,the unit chemical structures of .

The practical measure such as "unit structure teaching method" is taken to enable students to participate in all aspects of the teaching experiment,which changes the simple and traditional "teaching-accepting" relationship between teachers and students,enhances communication between teachers and students and stimulates students\' enthusiasm and initiative.

Function Evaluation of Acrylonitrile Structural Unit of Polyacrylate Size Mixture;

Based on detailed analysis on sedimentary units of thick oil zones, this paper describes spatial form of single sandbody and boundary relation among different sandbodies through vertically subdividing sedimentary units and structural units and areally subdividing sedimentary microfacies.

Furthermore, surface relief of a single structural unit istent--shaped rather than invariant--plane--strain--typed and the tilt angles of the two sides are 9--10°an.

Two kinds of the most common molded pulp pad structure units were tested about their static load,and analyzed using statistical means.

Influence of structure cell on electromagnetic characteristic of DNM;

As is so difficult to simulate the fact suffer load circumstances of the space steel truss joint, the joint specimen is designed as a space steel truss structure cell.