As a special industrial type of copper resources, native copper is formed under a weak alkalic and sulphur-deficient deoxidized environment.Three conditions are necessary during ore formation, i.e.是什么意思_As a special industrial type of copper resources, native copper is formed under a weak alkalic and sulphur-deficient deoxidized environment.Three conditions are necessary during ore formation, i.e.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句