Terrestrial oil-field water from the Upper Permian to Tertiary in China is charactorized by great variation in its chemical composition. According to the first
Described in detail in this paper are the principle of Li2C2 chemical reaction and the experimental apparatus and chemical procedure. Conditional experiments on
This paper is a summation of the discussions held since 1976 under this topic.Zonation and the unbalance rules regarding temporal and spatial distribution of gr
Statistical analysis of regression coefficients is used to determine whether or not the two granites under investigation are resulted from the same stage of mag