求助翻译水平较好的朋友帮忙翻译下面的英文!? 求助翻译水平较好的朋友帮忙翻译下面的英文!谢谢!! A surface-active agent is a substance that ,when used in small quantities,modifies the surface properties of liquids or solids.It reduces surface tension in a fluid or the interfacialtension between two immiscible fluids ,such as oil and water.Surfactants are particularly useful in accomplishingthe wetting or penetration of solids by aqueous liquids and serve in the manner of detergent,emulsifying,or dispersing agents.They are more effective than soap in certain situations and are used by conservators for such purposes as cleaning,wetting,and dispersing.查看更多5个回答 . 5人已关注