| 1. | Humic substances are known to coat membrane filters .
腐殖质是已知能够覆盖滤膜的物质。 |
| 2. | Humic acids are usually regarded as polymers of aromatic compounds .
腐殖酸通常被看作是芳烃化合物的聚合物。 |
| 3. | They believe that the humic materials are leached from decaying plant materials .
他们认为腐植物料是从腐烂的植物体浸沥而来。 |
| 4. | Extraction of humic substances from sediments is often the first task that confronts the investigator .
从沉积物中萃取腐植物是研究工作者遇到的第一个问题。 |
| 5. | Ultimate analysis provides an useful inventory of the distribution of the major elements in humic substances .
元素分析提供腐殖物质中主要元素分布的有用资料。 |
| 6. | Preparation of the humic acid water purfier
新型腐植酸类净水剂的研制 |
| 7. | Determination of yield of humic acids in coal
煤中腐植酸产率测定方法 |
| 8. | Test method of humic acid ammonium fertilizers
腐植酸铵肥料分析方法 |
| 9. | Technical condition for compound fertilizer of humic acids from coal
煤系腐植酸复混肥料技术条件 |
| 10. | Humic acid for lead - acid storage battery use
铅酸蓄电池用腐植酸 |
