Through the separation, lignosulfonate with narrow molecular weight distribution was obtained and then chemically modified.木质素磺酸盐是一种常见的普通减水剂, 其分子量分布较宽,从而影响减水剂性能.The graft mechanism of lignosulfonate and acrylic acid was ...
The graft mechanism of lignosulfonate and acrylic acid was studied in this paper.本文研究了木素磺酸盐和丙烯酸单体的接枝共聚机理.Through the separation, lignosulfonate with narrow molecular weight distribution was obtained and then chemically m...
For some buildings a vertical section is more informative than a plan.有些建筑的立面图能比平面图提供更多的信息。The gadget can be attached to any vertical surface.这小玩意儿可以粘在任何垂直表面上。The gadget can be attached to any vertical or near vertical s...
Methods: 30 rats were divided into three groups randomly: LI, KI and KIO 3 guoup.方法: 将低碘wistar大鼠30只随机分为3组.低碘组(LI), 碘化钾组(KI),碘酸钾组(KIO3).Methods: 30 male SD rats ( islet donors ) were randomly divided into 3 groups.方法: 取30...