查询词典 covalence

In the investigation of optical and magnetic properties of semimagnetic semi-conductors containing transition-metal ions, one electronic d-orbital should not be treated as a pure d-orbit, instead of a mixed orbit t2g or eg because of strong covalence.

在含过渡金属离子的半磁半导体的光学和磁学性质研究中，由于体系的共价性较强，d轨道不再是纯d轨道，而是混合轨道t2g或eg。

With rising of Si concentration in the alloy melt, small Si-Si peaks were found in Gaussian separation of RDF of the melts, implying Si-Si clusters with covalence bond in the melt, whose area firstly reduce in low temperature range (below 875℃) and secondly increase in high temperature (over 875℃).

分解结果表明，在共晶与过共晶熔体结构中，存在着Si-Si共价键的小峰，该峰对应着熔体的Si原子集团，其数量随着温度的升高，在测量温度范围内先降低后升高。

The ability of carbon to form stable compounds in such astonishing numbers arises in that it utilizes its four valence electrons completely in the establishment of four covalence,its valence shell becomes saturated.

碳原子能够利用其全部四个价电子构成共价键，并形成稳定的饱和价电子层。这就导致碳元素能构成各类数目惊人的稳定化合物。注意本句使用的是"逆序"的翻译方法。

A computed method of the bond formation power between atoms in crystal was presented with combination of both Yu′s "The empirical electron theory of solids and molecules" and Pauling′s covalence bond theory.

将固体与分子经验电子理论和 Pauling 共价键理论相结合，提出了计算晶体原子间成键能力的方法，并计算出常用的3 种触媒 Fe， Co， Ni原子间的成键能力分别为 2911 1， 2955 3， 2956 4。

In addition, the energy of s and p orbits of F2 or F3 ion is lower in the ferroelectric phase than in the cented symmetry phase and the covalence character of F1 ion whose contribution to the displacement is largest almost lose, which stabilize the structure of the ferroelectric system.

铁电相F2(F3)离子的能量低于中心对称相，最大位移贡献者F1的化学键性由弱共价作用到离子键的变化也是最大的，这均有利于体系的稳定。

We have found that the lattice constants and bond length decrease with pressure increasing.The charge transfer from S atoms to Zn atoms becomes less,and the covalence nature of Zn-S bond becomes stronger.

Ves[4]和Zhou[5]等人研究了ZnS的结构特性，光学性质，电子结构，董国义等人用微波吸收法进行了掺杂研究[6]，他们都得到了比较满意的结果。

Modifying agent Sr can weaken the covalence bond of Si-Si clusters in the Al-Si melts, reducing the size and amount of Si-Si clusters, and restrain the segregation of Si atoms in melt and strengthen the nucleation of Al phase.

变质元素Sr具有削弱液态Al-Si合金中Si-Si共价键的倾向，使得合金液中的Si原子集团的尺寸与数目减小，从而抑制了Si相的优先析出。

Dollor (add up to 14 million RMB about) hind, gu Ge announces to roll out new policy now, every employee is in seismic alms, the company matchs doubly, at present value of alms total covalence is 19 million RMB, and still increasing everyday.

新浪科技讯在谷歌追加对地震的捐款200万美金(约合1400万人民币)后，谷歌今日公布推出新政策，每位员工在地震的捐献，公司加倍地匹配，现在捐献总共价值为1900万人民币，而且仍然天天在增加。

And report according to Taiwan media, covalence of man size betrothal gift is worth 120 thousand multivariate (Monetary Unit is a RMB, similarly hereinafter), but the bride did not close however, took only indicative affianced red bag.

而据台湾媒体报道，男方大小聘礼共价值12万多元(货币单位为人民币，下同)，但是新娘却没有收下，只取了象征订婚的红包。

Its bonding characterization and stability are discussed. The results show that these complexes are covalence complexes and that both the in-plane σ-bond and the in-plane π-bond in these complexes play an important role. The ESR spectra of VO -Ser system, VO -Ser-Phen system and VO -Ser-Bipy system in binary solvent glycol/water (V/V=1: 1) solution at various acidities (pH=1～14) have been observed at low temperature. It is found that in different pH ranges different structural complexes are formed.

测定了五种氨基酸席夫碱铜配合物的室温多晶粉末ESR谱、在不同溶剂中的室温及低温溶液ESR谱，确定配合物的配位环境；对室温溶液谱中观察到的二级效应和驰豫效应给予了理论解释、计算了驰豫参数；根据低温ESR波谱，计算了配合物的成键特性及稳定性，发现此类配合物为共价型配合物，平面内σ配键和平面内π配键均起重要作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。