Dark purple crystals of potassium ferrate was produced, the productivity, pureness and cost of which were 45.2%, 49.6% and 120,000 RMN per ton respectively.是什么意思_Dark purple crystals of potassium ferrate was produced, the productivity, pureness and cost of which were 45.2%, 49.6% and 120,000 RMN per ton respectively.在线翻译_英语_读音_用法_例句