lean ore वाक्य
"lean ore" हिंदी में lean ore in a sentenceउदाहरण वाक्य
- Heiyingshan iron ore mine is the high content iron ore base of jiuquan iron and steei co . ( jisco ) . we must be studied both the ore dressing technology of the lean ore and the high phosphor content ore and economic and technical analysis for building the ore dressing - works to make fully use of them