| 1. | Photometric determination of microamounts of silicon in copper , cobalt and nickel after precipitation - separation 沉淀分离光度法测定金属铜钴镍及其合金中微量硅 |
| 2. | Determination of platinum in platinum jewellery alloys - gravimetric method after precipitation of diammonium hexachloroplatinate 铂珠宝合金中铂的测定.二铵六氯铂沉淀后的重量法 |
| 3. | Determination of platinum in platinum jewellery alloys . gravimetric method after precipitation of diammonium hexachloroplatinate 铂饰合金中铂含量测定.六氯铂酸二铵沉淀后测定重量 |
| 4. | Platinum jewellery alloys - determination of platinum and palladium - gravimetric method after precipitation of diammonium hexachloroplatinate and dimethylglyoxime 铂合金首饰铂钯含量的测定氯铂酸铵重量法丁二酮肟重量法 |
| 5. | Determination of platinum in platinum jewellery alloys - gravimetric method after precipitation of diammonium hexachloroplatinate iso 11210 : 1995 ; german version en iso 11210 : 1995 铂装饰合金中铂含量的测定.六氯铂酸二铵沉淀后用重力 |
| 6. | The methods for chemical analysis of lead and zinc bulk concentrates - the determination of lead and zinc content - the na 2edta titrmetric method after precipitation separation 混合铅锌精矿化学分析方法.铅量与锌量的测定.沉淀分离naedta滴定法 |
| 7. | The change of co2 concentration after precipitation within vegetation demonstrates co2 concentration in the vegetation impacted by rainfall and deposition in the rainfall 释放量与近地表大气co 。浓度的相关性分析结果显示出土壤co 。的释放是大气co 。 |
| 8. | Therefore , metals moving upwards from mineralizations may be absorbed and form weak geochemical anomalies ( weak signals ) in surface loess . the metals can be effectively extracted by neutral salt . loess - covered area in china is primarily distributed at the semiarid region , the secondary carbonates , which were formed after precipitation of ions through evaporation and capillary processes , are widespread in the surface soil 黄土覆盖区主要分布在干旱半干旱地区,次生碳酸盐在地表土壤中普遍存在,蒸发所产生的毛细作用、地气流的上升作用等所带入的各种形式金属元素,在地表土壤(黄土)与碳酸盐发生共沉淀或被吸持。 |