| 1. | Major treatment methods for arsenic include sulfide precipitation, or complexation with polyvalent heavy metals .
砷的主要处理方法有硫化物沉淀法，或与多价重金属络合。 |
| 2. | Copper was reduced from 20 mg/l to below detectable limits by sulfide precipitation from a gold-ore extraction wastewater .
用硫化物沉淀法可将金矿抽提废水中的铜含量从20毫克升降到可检测标准以下。 |
| 3. | Sales approach 4 - sodium oxalate settling method
推销手法4草酸钠沉淀法 |
| 4. | Application of heterogeneous deposition in particle coating
非均相沉淀法在无机包覆中的应用 |
| 5. | Soil quality - physical methods - method by sieving and sedimentation
土质.物理方法.筛分和沉淀法 |
| 6. | Fruit juices . determination of suspended pulp . method by sedimentation
果汁.混浊果汁的测定.沉淀法 |
| 7. | Research on coagulation - sedimentation treatment of filature wastewater
混凝沉淀法处理缫丝废水的研究 |
| 8. | Research into fluoric waste treatment with sedimentation of calcium salts
钙盐沉淀法处理含氟废水的研究 |
| 9. | Proper reaction condition for urea and aldehyde under ambient pressure
硼酸共沉淀法合成含硼氧化铁的结构状况解析 |
| 10. | Ammonia - nitrogen removal from landfill leachate by chemical precipitation
化学沉淀法去除垃圾渗滤液中氨氮的试验研究 |
