The iron ore from Dongchuan Baozipu,Yunnan has complex properties.It contains hematite and limonite that are valuable minerals and high impurity content of both phosphorus and silicon.是什么意思_The iron ore from Dongchuan Baozipu,Yunnan has complex properties.It contains hematite and limonite that are valuable minerals and high impurity content of both phosphorus and silicon.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句