PURPOSE:To widen the control range of self-alignment and to reduce the cost, by providing a bearing metal having a spherical outer circumference at the outer circumference lower part and a roll holder having a spherical inner circumference part in the same alignment for the intermediate part of ...
报道了一种用铬天青S直接比色法快速测定硅铁中铝的新方法,着重对分析样品的分解及酸度控制进行了条件试验,对各种试剂的用量进行了验证。结果表明:用铬天青S直接比色测... 郭睿,程芳玲GUO,Rui,... - 《陕西科技大学学报》 被引量: 0发表: 2003年 硅铁 铝含量的测定 铬天青S分光光度法,EDTA滴定法和火焰原...