The institute has provided 280 million tons of phosphorite resources, 41.13 million tons of troilite reserve, 0.5million tonsof barite reserve.是什么意思_The institute has provided 280 million tons of phosphorite resources, 41.13 million tons of troilite reserve, 0.5million tonsof barite reserve.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句