Evidence of ironmaking has been found in Nigeria, Ghana, and Mali.
在尼日利亚、加纳和马里发现了炼铁的证据。
2
Knowledge of ironmaking penetrated into the forest and savannahs of West Africa at roughly the same time that ironmaking was reaching Europe.
大约在制铁技术传到欧洲的同时,西非的森林和大草原上也开始有了制铁的知识。
3
The sponge ironmaking with iron sludge produced during DSD acid-making can be used for not only general metallurgy but also iron-carbon bed to treat DSD acid oxidation wastewater.