analy-sis相关论文
正交设计筛选胃肠止血颗粒剂中游离大黄素的最佳提取工艺,用反相HPLC法测定,色谱柱系ZorbaxODS柱,(4.6mm×250mm),流动相为甲醇-水(80:20),流速1.0ml/min,紫外检测波长254nm,室温操作,测......
对油泵房真空系统不合理工艺进行了剖析,并就加强油库工艺菅理提出建设性意见。...
Rare earth elements (REEs), especially heavy rare earth elements (HREEs), are in demand for their current and emerging a......
The present study aims to reveal the contributing factors for train delays in Tokyo metropolitan area by conducting stat......