covalence

1. Of or relating to or characterized by covalence. A divalent atom or radical.
   属于、关于或具有共有原子价特点。
2. On the other hand, if we have a perfect covalence bond, we have identical equal sharing.
   另一方面，如果我们有一个完美的共价键，有相同程度的电子共享。
3. Characterization of Some Chemical Properties of Covalence Compounds by their Bond Energies
   共价化合物的某些化学性质的键能表征
4. First, the silver nanoparticles modified electrodes made by adsorption or covalence self-assembly have been fabricated.
   首先，制备了吸附型和共价自组装银纳米修饰电极。
5. The results show that the contribution from the SO coupling of ligand ion to EPR parameters can not be neglected for ligand ion possessing large covalence and SO coupling constant such as Br-.
   研究表明，对Br－这类有强共价性和大SO耦合系数的配体，其SO耦合作用对络合物EPR参量的贡献不可忽略。
6. Based on the empirical electron theory of solids and molecules the valence electron structure of α 2 phase was calculated and the calculated results show that the covalence electrons mainly focus on the strongest bonds of Fe ⅰ Si and Fe ⅰ Fe ⅱ.
   利用固体与分子经验电子理论对其进行了价电子结构计算，结果表明，α2相中的共价电子主要集中在最强的FeⅠSi和FeⅠFeⅡ键上。
7. It indicates that the covalence between the Er3+ and O2-is mainly affected by the number of non-bridging oxygen ions.
   研究表明Er-O键共价性主要受基质玻璃中非桥氧数的影响，而阴阳离子间电负性的影响可以忽略。
8. Study on preparing ELISA reagent with method of linking antigen to solid phase by covalence bond
   以共价连接法使抗原固相化制备酶联免疫吸附测定试剂的研究
9. The concept of atomic average covalence electron density ( AACED) has been advanced in the valence electron theory. By using it, the AACED on the crystal faces of typical structural unit in martensite cell is evaluated.
   在价电子理论中提出了原子平均共价电子密度的概念，计算了马氏体中典型结构单元内各晶面上的原子平均共价电子密度。
10. Transition metal nitrides belong to a class of interstitial compounds, have the properties of covalence compound, ion crystal and transitional metals.
    过渡金属氮化物是一类金属间充型化合物，兼具有共价化合物、离子晶体和过渡金属的性质。
11. By analyzing the mass spectra, it is found that the vanadium and sulphur atoms are bond by covalence bond in cluster, and the size-distribution of clusters with definite V atoms and different number of S atoms can be fitted by lognormal curves.
    根据对其实验记录的激光等离子体质谱进行分析，发现钒硫原子簇的化学键基本上是共价型的，对应于相同钒原子数目的正负离子的相对丰度分别符合于不同形式的对数正态分布。
12. ESR studies on the covalence properties of copper ( ⅱ)-n-amine complexes
    Cu（Ⅱ）-正胺络合物共价性的ESR研究
13. The covalence corrections on ionic model total energy for yba_2cu_3o_7
    YBa2Cu3O7离子模型总能量的共价修正
14. While the strongest bond is the Al-Li bond in the segregated cell containing vacancy, and the Al atomic covalence radius in the cell is less than that of Li atom.
    而含空位的偏聚晶胞的最强键为Al&Li键，Al原子的共价半径要比Li原子的共价半径要小；
15. The results show that the covalence bond-net in the GP zone and θ″ phase coherence with bulk were much stronger than that in bulk, and enhanced the whole covalence bond strength of alloy.
    计算结果表明：合金基体析出的共格GP区、θ〃相，具有比基体更强的共价键络，提升了合金的整体键络强度。
16. C_ ( 60) is one kind of fullerene with high conjugated cage-types structure. Its covalence between two hexagons has high reactivity, which behaves as addition reaction of double bond.
    C（60）是高度共轭的笼状结构的碳素体，分子结构中六边形环间的共价碳碳双键是富电子区，反应性能与烯烃有类似性，主要表现为双键加成。
17. Study of atomic average covalence electron density in EET
    余氏理论中原子平均共价电子密度研究
18. Then the following can be concluded that there exists sp hybridization in LiH crystal, enhancement on the overlap of electron cloud and covalence of LiH crystal in bonding.
    成键时电子的重叠增强，LiH晶体的共价性增加。
19. We have discussed the different covalence factors which bring the various influences to the crystal field, electrostatic interactions and spin-orbit ( SO) coupling matrix element.
    并且讨论了共价因子的不同给晶场、静电相互作用和自旋-轨道（SO）耦合作用矩阵元带来的影响。
20. Based on the consideration of valence balanced, the clusters formed by high valence ions will attract more anions into the lattice, the local covalence density of clusters increased.
    基于价态平衡的要求，高价离子替代时形成的团簇吸引更多的阴离子进入晶格，使团簇内的局域价电子密度提高。
21. Over a very large number of experiments, we found that the phenomenon of covalence density and positron life saturation are almost existed in all kinds of materials, but there is still no one in-depth study on the nature of this phenomenon.
    为什么会出现这种现象呢？在大量的实验中，我们发现各种材料中均有价电子密度以及正电子寿命饱和的现象，但目前还没有人深入研究这种现象的本质。
22. In certain doping concentration later, two mechanisms achieve a balance, both the influence on covalence electron density cancelled out.
    在达到一定的掺杂浓度以后，两种机制达到一种平衡，二者对价电子密度的影响互相抵消。
23. Due to the particularity of structure, clusters have some strange properties, such as quantum size effect, etc. According to the analysis of experimental results, clusters effect is the deciding factor of covalence density saturated detected in all kinds of materials.
    由于结构的特殊性，团簇具有一些奇异的特性，比如量子尺寸效应等。根据实验结果分析，团簇效应是探测到各种材料中价电子密度饱和的决定因素。

noun

1. valence characterized by the sharing of electrons in a chemical compound

   Synonym:    covalency