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....
The & quot ; n & quot ; in & quot; thinness & quot ; is a geminate.“ thinness ”中的字母“n ” 是两个并列的.Later, assimilation, geminate word and tone sandhi are studied at the word tier.此后, 我们研究了词层的同化错误 、 叠音词和连读变调.The error pattern...