The joint toxicity of heavy mental ions lead , zinc and cadmium to hydra sp . was evaluated using the additive index method 摘要以水螅为实验生物,采用相加指数法,研究了铅、镉和锌3种重金属离子复合污染物的联合毒性。
The surface of polyion composite membranes was uniform while the cross - section micrograph showed the separation layer was cross - linked with the support membrane very well 聚离子复合膜的表面致密无孔,截面层次清晰,基膜和复合膜结合紧密。
In this paper , the dynamic lbl polyion composite membranes were prepared by depositing polyacrilic acid and polyethyleneimine alternatively on the ultrafiltration support membrane under a certain pressure . the polyion composite membranes were evaluated by the pervaporation separation of water - ethanol mixture 采用动态lbl (动态层-层吸附)成膜方法,以聚丙烯酸为聚阴离子,聚乙烯亚胺为聚阳离子,一定压力下,在超滤膜上制备聚离子复合膜。
There are two main factors resulting in fading capacity and poor cyclability , one is the john - teller distortion of mn3 + , and the other is mn dissolution to electrolyte . the main objects of this paper are to resolved these key problems effecting on the performance of batteries . during the research of suppressing jahn - teller distortion , low valence cation ( al 、 mg ) and anion ( f ) doped method are usually adopted 针对limn2o4正极材料在电化学循环过程中发生jahn - teller畸变和mn在电解液中溶解这两个导致容量衰减和循环性能劣化的关键问题,分别采用al 、 mg阳离子掺杂和al / f 、 mg / f阴阳离子复合掺杂两种措施,对尖晶石结构limn2o4正极材料进行了改性研究。
The significant capacity loss of the spinel limn2o4 during cycling hereby prevents its wider use as cathode materials for lithium secondary batteries . there are two main factors resulting in fading capacity and poor cyclability , one is the jahn - teller distortion of mn3 + , and the other is mn dissolution to electrolyte . the main objects of this paper are to resolved these key problems effecting on the performance of batteries 针对limn _ 2o _ 4正极材料在电化学循环过程中发生jahn - teller畸变和mn在电解液中溶解这两个导致容量衰减和循环性能劣化的关键问题,分别采用阴阳离子复合掺杂和尖晶石晶粒表面包裹两种措施,对尖晶石结构limn _ 2o _ 4正极材料进行了改性研究。
离子: ion复合: compound; complex; composite ...电子 离子复合: electron ion recombination离子离子复合: ion-ion recombination电子离子复合: electron ion recombination离子电子复合: recombination of ion and electron离子复合通道: ion recombination channel离子复合系数: coefficient of reunion of ion光电离子复合探测器: combination of optical and ionization detector朗吉万离子复合理论: langevin ion-recombination theories朗之万离子复合理论: langevin ion-recombination theory电子复合: electron recombination双电子复合: dielectronic recombination原子复合: atomic recombination子复合型: subcomplex子复合形: subcomplex分子复合材料: molecular composite激子复合辐射: exciton recombination radiation启动子复合物: promoter complex强子复合模型: hadron composite model三分子复合体: tri molecular complex等电子复合中心: isoelectronic recombination center高分子复合材料: polymer based composite开放启动子复合体: open-promoter complex凝血因子复合物: prothrombin proconvertin stuart-prower factor; stuatr-prower factor