nonmetallic mineral resource meaning in English
非金属中矿物资源
Examples
- The present situation of exploitation and trend of the nonmetallic mineral resources in guangdong province
广东省非金属矿开发现状及发展方向 - Exploration , exploitation and utilization of nonmetallic mineral resources for building material in leshan , sichuan
四川乐山建材非金属矿产资源的勘查与开发利用前景