“钴的”用英语怎么说？

介绍利用废金刚石中的钴生产七水硫酸钴的方法.The recovery technique of cobalt in waste diamond cutter is introduced.研究了氧气对除钴的影响,并试图采用亚硫酸钠来消除氧气的影响.The effect of the sodium sulfite concentration on cobalt removal was investigated.废旧锂离子电池中钴的含量较高....