Among surface-active lipoidal substances, lysolecithin is probably the best studied with regard to its fusing capabilities.
具有表面活性的脂类物质中，溶血卵磷脂就其融合性来说可能是研究得最为彻底的。
2
The new method in the determination of negative ion surface-active agent is introduced, comparing with methylene blue method, it have merits of simple operation step and little dosage.
介绍了水中阴离子表面活性剂测定新方法，该法与亚甲蓝法比较，具有操作步骤简单，萃取剂用量少的优点。
3
The nutrients are deep down in the active layer anyway, not high up near the surface, which is the part of the active layer most affected by run-off.