对采用离子交换法从钼酸铵溶液中除钒进行了研究。着重考察了DP - 1螯合型树脂从钼酸铵溶液中分离钒。
Study is made of vanadium removal from ammonium molybdate solution by ion exchange, focusing on the use of DP-1 resin for the said purpose.
对主干中段的直径为11.5～15厘米的刚发病11龄甜橙树，注入每毫升合1000 单位的盐酸四环素溶液5000～8500 毫升。
A dosage of 5000-8500 ml in 1000 ppm of achromycin was used for the 11 years old orange trees with trunk diameter between 11.5~15cm.
其合成方法以溶液聚合为好。增韧效果与体系相态结构、界面键合和环氧基体的延展性有关。
The best synthetic method was solution polymerization and the toughening efficiency was related to morphology, interfacial bonding and matrix deformation of the system.
其合成方法以溶液聚合为好。增韧效果与体系相态结构、界面键合和环氧基体的延展性有关。
The best synthetic method was solution polymerization and the toughening efficiency was related to morphology, interfacial bonding and matrix deformation of the system.
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