geologic structure was complex, the changes of crude property were big and so on, the paper summed up indicating characteristics of rod thin layer gas chromatogram analysis data for different crude property, and induced the interpret.

Using the high quality materials commonly used in the present' production, through treatment and scientific composition, the household fine porcelain with surface similar to bone china is made, and unification of recipes for casting or rolling products is achieved and the color difference of products is eliminated.

The article introduces a method which can perform the catalytic polymerization of aluminium tri -chloride recombined catalyst of a new formulation using HK - 200℃ distillated fuel oil of ethylene coke as raw stuff-to produce a high quality gasoline.

This paper analyzed the problem and prospect of the development and industrialization of quality rape production in Shaanxi province and brought forward principal measures to develop and industrialize the production of quality rape in Shaanxi province.