This paper analyses the relation between highway net density, population density and per capital GNP, and sets up a statistic model response the macro demand of national region highway-net.是什么意思_This paper analyses the relation between highway net density, population density and per capital GNP, and sets up a statistic model response the macro demand of national region highway-net.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句