To reduce traffic accidents and improve the antiskid ability at some particular road sections such as entrances and exits of tunnels,continuous curves,large longitudinal slopes and toll-gates, technical standards for different components of thin-layer materials were put forward based on the analysis of curing mechanism for bi-component thin-layer paving material.

Application of vertical metal positive-displacement flow meter in special units;

According to the specialty of electronic resource,the article has given a systematical discussion and detailed demonstration of some different special fields between general printed books and electronic resources.