changkeng meaning in English

长坑

The genesis of siliceous rocks in the changkeng gold - silver deposit , guangdong province
广东省长坑金银矿床硅质岩石成因分析
Composition and source study ofore - forming fluid in changkeng gold - silver deposits , guangdong province , china
广东长坑金银矿床成矿流体成分及来源探讨
The radiolarite and the biological remains in the silicalite of changkeng gold - silver deposit , guangdong
广东长坑金银矿床硅质岩中的放射虫化石及生物化石残迹
Composition of oxygen isotopes and discussion on the formation of changkeng au - ag deposit , guangdong province
广东长坑金银矿床氧同位素组成特征及矿床成因讨论