In the third chapter, author takes a statistic analysis about the mine deposited and exploitation thing and exploitation foreground, which includes granite, porcelain clay, bluestone, quartz etc.

 
  • 第三章,全面统计分析了花岗岩、瓷土矿、青石、石英砂等矿产资源的赋存和开采状况、开发前景。
今日热词
目录 附录 查词历史