valence 价态(759) 化合价(33)   价态     Effect of Heating in Vacuo and CO Adsorption on the Copper Valence of CuO/γ-Al_2O_3     抽空和CO吸附温度对CuO／γ－Al_2O_3中铜价态的影响 短句来源     STUDY OF SEPARATE METHOD OF As VALENCE IN ENVIRONMENT SAMPLE     环境样品中砷的价态分离方法研究 短句来源     Application of PVC nylon 6 Resin to Valence State Analysis ofTrace Gold in Natural Water     PVC-尼龙6树脂应用于天然水中痕量金的价态分析 短句来源     INVESTIGATION ON THE VARIATION OF Ce VALENCE STATE DURING THE FORMATION OF CeO 2 NANOMETER PARTICLES     CeO_2纳米粒子形成过程中Ce的价态变化 短句来源     Valence of Precursor Compound Effects on the Stability and Composition of Cu/Cl Binary Cluster Produced by Laser Vaporization     样品价态对激光气化产生Cu/Cl团簇的组成和稳定性的影响 短句来源 更多          化合价     Three new mononuclear manganese complexes MnL 2 1·PhCOO -, MnL 2 2·PhCOOH, MnL 2 2·HAc were synthesized, and were also characterized by elemental analysis, determination valence, molar conductivity and electronic magnetic susceptibility, thermoanalyses, IR,Uv Vis,ESR spectra etc Possible structures of these complexes were brought out HL 1 and H 2L 2 represented salicylidene 1,2 phenylenediamine and salicylidene ortho hydroxyphenylamine respectively, both of which were tridentate ligands     首次合成了三种单核锰配合物MnL21PhCOO－，MnL22PhCOOH，MnL22HAc．其中配体HL1，H2L2分别为三齿配体水杨醛缩邻苯二胺和水杨叉邻氨基酚； Ph为苯基．运用元素分析、化合价测定、电导率和磁化率测定、热重分析、IR、Uv－Vis、ESR等方法对其性质进行了研究，提出了配合物可能的结构． 短句来源     ESR spectrum with no superfine structure confirms the presence of V 4+ and the average valence of vanadium in the product is +4.30 on the basis of TG and XPS.     无明显精细结构的室温 ESR谱证明了 V4 +的存在 ,根据 TGA和 XPS求得产物中 V的平均化合价约为 + 4 .3 0 .VOx-NTs正极材料初始充电容量达到 40 4m A. 短句来源     The binding energies of Ca2p_(3/2) and Sr3d_(5/2) indicate that their valence in this system are both +2, without mixed valence.     Ca2p3/2的光电子发射谱中峰位位于346.4eV左右,Sr3d5/2的光电子发射谱中峰位位于133.4eV左右,证明在该体系中Ca和Sr的化合价均为+2价,没有混合价态存在. 短句来源   “valence”译为未确定词的双语例句     CHANGE OF Ce VALENCE STATE DURING THE PREPARATION OF CeO_2 ULTRAFINE POWDER BY SOL-GEL METHOD     CHANGE　OF　CeVALENCE　STATE　DURING　THE　PREPARATION　OF　CeO_2　ULTRAFINE　POWDER　BY　SOL－GEL　METHOD 短句来源     XPS analysis reveal that valence of Ce and Tb are mainly in form of Ce4+ and Tb3+,and valence of Zr is in form of Zr4+ on the surface of samples.     X光电子能谱分析表明,固溶体表面Ce和Tb主要以Ce4+和Tb3+形式存在,Zr以Zr4+形式存在; 短句来源     It was found that KNO_3/AC and Ba(NO_3)_2/AC were reduced at 400℃ and 350℃ respectively. Furthermore,the samples were not reduced completely,and formed higher valence(state)nitrogen compound N_2 and N_2O(for their reduction products).     实验结果表明,KNO3/AC和Ba(NO3)2/AC分别在400℃和350℃发生还原,生成N2O和N2两种较高价态的还原产物,且助剂的还原不完全。 短句来源     Study on the Ionic Valence Change of Cr 3+ in Cr 3+ Doped Transparent Mullite Glass Ceramic     掺Cr~(3+)透明莫来石微晶玻璃中Cr~(3+)离子的变价问题研究 短句来源     The Relationship Between the High-T_c Superconductivity of Oxide and the Number of Average Valence Electrons     高T_c氧化物超导电性与平均价电子数关系 短句来源 更多        查询“valence”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   valence Studies on exposure status of inhabitants to water-arsenic valence states in areas with endemic arsenism in the Datong basin in 例句来源       This study aimed to describe the distribution of water-arsenic (As) valence states and its relationship to areas with endemic arsenism in the Datong basin. 例句来源       The most common type of drinking water arsenic valence state was As(III) in the endemic disease-areas. 例句来源       This led us to conclude that the fraction of each water-arsenic valence state should be studied when determining the arsenic content of drinking water. 例句来源       The valence of atoms was determined by X-ray photoelectron spectroscopy. 例句来源       更多                    In the present investigation, the influence of various oxides such as Na_2O, CuO,CaO,BaO, B_2O_3,SnO_2 on the electro-conductivity of phospho-vanadate glass was described, and the values of activation energy of conduction for different glasses were reported.From the view-point of crystal chemistry, the relationships between the composition and the electro-conductivity were explained with the hypothetical structural model of the glass.The authors assumed that the theory with regard to the mechanism of conduc...             本文根据玻璃的半导体性质研究了Na_2O、CuO、CaO、BaO、B_2O_3、SnO_2等氧化物在磷钒酸盐玻璃中对电导率的影响。计算了各种玻璃的电导激活能。 从晶体化学观点出发,对组成与电导性质之间的关系,联系玻璃结构作了说明。参照晶态氧化物的电导机构,我们认为这个理论可引用来解释磷钒酸盐的电导本质。 玻璃的电子电导主要是由钒离子的变价来进行的。若其中有可迁移的阳离子存在,则离子电导将显示它的重要地位。实验中证实,钙离子在较高温度下,也可以移动并成为电导的主要载流子。 按照磷钒酸盐玻璃的电导事变化规律,可使我们知道怎样去控制这类玻璃材料的电导性质,以及怎样去预期获得他种良好导电的玻璃。 文摘来源          In the present communication a practical method for obtaining a semi-conducting glass with high electrical conductivity was described. The authors have attempted to utilize a mixture of BaO(25％), TiO_2(45％) and SiO_2(30％)as the fundamental composition for this investigation,and to the mixture the flux(Na_2SiF_6), various reducing agents(carbon powder, Al, Zn or Mg powder, tartaric acid) and oxides(Fe_2O_3, SnO_2, Sb_2O_3, V_2O_5) were then added. Each batch being melted separately under different atmosphere...             本文叙述了高导电钛硅酸盐半导体玻璃的实际制备方法。作者在本研究中利用BaO—25％、TiO_2—45％、SiO_2—30％的基础玻璃组成,在其中分别添加助熔剂(Na_2SiF_6)、还原剂(碳粉,铝、锌或镁粉,酒石酸)以及少量氧化物(Fe_2O_3、SnO_2、Sb_2O_3、V_2O_5)配成多份料粉,各自在不同气氛下熔制。以酒石酸、镁粉、氧化铁作为外加物时,获得了室温时电导率为10~(-3)欧姆~(-1)·厘米~(-1)的玻璃。 组成中用Na_2O取代BaO,开始时玻璃的电导率升高,超过临界数量后,即现降低。 本文还简要地讨论了钛离子被碳还原的过程以及各种还原剂、外加氧化物和气氛对玻璃电导率的影响。 可以指出,钛硅酸盐玻璃的电导机构也是由电价变换来实现的,与钒酸盐玻璃中的作用相似。 文摘来源          The formation of divacancies in MgO, their amount, the influence from dopant andthe influence on sintering were studied. There are many arrangements of the □Mg~(2+) and □o~(2-) in MgO. By some arrangementsdivacancy will not be formed.The probability is less than one. The concentration of diva-cancies formed at 1,800℃ is estimated as less than 10~(-5). When MgO is doped with Fe_2O_3, the concentration of divacancies is increased, andthere are two mechanisms of the formation of divacancies. The dopant Fe_2O_3...             研究了MgO中双空位的生成、生成量,溶质对双空位生成量及对烧结的影响。 MgO中Mg~(2+)空位及O~(2-)空位相互间有种种排列方法。有些排列方法不能生成双空位。生成双空位的几率小于一.经计算,得知在1800℃生成双空位的浓度在10~(-5)以下。 在MgO内加入Fe_2O_3后,经由二种机理,双空位浓度大增。 Fe_2O_3溶入MgO后,发生价差空位。价差空位可提高双空位生成的几率,但效果不大。以1.2～1.4％ Fe_2O_3溶于MgO而论,在1800℃价差空位浓度只有热平衡空位之8％。不能提高双空位生成几率甚多。 发生最大作用者为Fe~(3+)先是Fe~(3+)与□_Mg~(2+)生成复合体(Fe~(3+)-3/2□_Mg~(2+))。这个复合体扩散甚易。当它与□o~(2-)接触时,放出□_Mg~(2+),□_Mg~(2+)o~(2-)生成双空位。剩下的Fe~(3+)扩散,与□_Mg~(2+)接触,又生成复合体。复合体再扩散,再与□o~(2-)接触,再放出□_Mg~(2+),再生成双空位。如此循环不已,可将大部分以至全部热平衡空位生成双空位。Fe~(3+)实际上是个触媒。在1820℃烧成的镁砂比重降... 文摘来源   << 更多相关文摘         相关查询: (valence low valence average valence variable valence chemical valence valence electron valence shell valence orbit valence stability valence bond antibody valence coordination valence  对查询结果不满意

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