Surface active properties of disodium ethoxylated and propoxylated tetradecanoic acid ethanolamine sulfosuccinates were investigated.研究了乙氧基化和丙氧基化十四酸乙醇酰胺磺基琥珀酸单酯钠盐的表面活性.The soap contains a blend of citric acid, aloe vera a...
莎草看上去和普通的草没什么两样，但其草茎是实芯的而不是空芯的。Sedge is similar in appearance to grass but has a solid rather than a hollow stem.当时的纸是由纸莎草植物的剥离物制成的.In those days , paper was made from strips of the papyrus plant.在温盖特的岛上,鹭的出现使莎草能够重现.On W...