Study on determination of trace cobalt in natural water by thin layer resin phase spectrophotometry 三元配合物薄层树脂相光度法测定天然水中痕量钴的研究
Thin - layer resin - phase - photometric determination of trace - amounts of molybdenum with phospho - molybdenum - blue method 薄层树脂相吸光光度法测定痕量磷的研究
Study on the determination of trace iron by thin layer resin phase spectrophotometry with fe - violuric acid system 紫脲酸体系薄层树脂相光度法测定痕量铁的研究
Determination of trace magnesium by thin layer resin phase spectrophotometry with loading resin preconcentration 负载树脂预富集薄层树脂相分光光度法测定痕量镁
Study on thin layer resin phase spectrophotometry for the determination of trace fe with fe - 1 , 2 - benzendiol system 磷钼蓝体系薄层树脂相吸光光度法测定痕量钼的研究
Study on the determination of trace cu by ddtc chelating resin preconcentration and thin layer resin phase spectrophotometry 螯合树脂预浓集薄层树脂相吸光光度法测定痕量铜的研究
The sand faced - iron mould casting process is a special iron castings production process , according which castings are to he cast in the iron moulds having a thin layer of the resin sand facing in their inner surfaces 摘要铁型覆砂铸造是指在金属型（铁型）内腔覆上一薄层树脂砂，然后采用这种覆砂铁型浇注铸件。
