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1、

The covalent bond in liquid Al-Si alloy and effect of Sr on the bond

液态Al&Si合金中的共价键及Sr的影响

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2、

SiC is combined by and Si by covalent bond, Which is a kind of non-oxide materials.

碳化硅是由碳和硅以共价键为主结合而成的化合物，属非氧化物材料。

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3、

So natural HA is chemically modified in the study and the methods include ion cross-linking and covalent bond cross-linking.

为此，本课题对天然的HA采用了离子交联法和共价键交联法进行了化学修饰，目的是延长HA在体内的滞留时间，并对两种交联方法进行了对比实验研究。

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4、

Discussion on the method of estimating partial ionic properties of covalent bond

对共价键的部分离子性估算的讨论

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5、

The relations of the covalent bond lengths calculated by the model agree with the empirical ones.

由此计算出来的共价单键、双键和叁键之间的键长关系基本符合共键长间的经验关系。

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6、

Chemical bond mainly includes electrovalent bonds , covalent bonds, and metalic bonds.

化学键主要有离子键、共价键、金属键.

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7、

Further study is needed before the origin of the covalent bond can a settled question.

需进一步深入研究方能解决共价键的起源问题.

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8、

The results show: their bond order of Al and covalent bond order of Al-O bond are alike;

研究结果表明：两者结构中Al的键级和Al&O键共价键级大致相同。

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9、

Chemical bond mainly includes electrovalent bonds, covalent bonds, and metalic bonds.

化学键主要有离子键、共价键、金属键。

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10、

The ability of an atom to attract electrons, and in particular, in a covalent bond.

原子对电子的吸引能力，特别是在共价键中。

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11、

Calculations of the vibrational frequence of the chemical bond R-H in the covalent molecules like h_nrh

共价键型分子氢化物HnR-H中R-H键振动频率的计算

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12、

But aluminum nitride is covalent bond compound with high melting point and low self-diffusion coefficient, and usually it can be used to prepare high dense aluminum nitride ceramic by hot pressing sintering.

但氮化铝为强共价键结合物，熔点高，自扩散系数小，通常需要热压烧结才能制备出高致密的氮化铝陶瓷。

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13、

A covalent bond is any time we have a pair of electrons that is shared between two different atoms.

所谓共价键就是我们有两个原子，共用一对电子。

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14、

It is almost always the electron-pair donor ( nucleophile ) in a covalent Bond.

在共价键中它总是电子对的施主 ( 亲核试剂 ).

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15、

The atom that contributes no electrons to a covalent bond.

受体没有给共价键提供电子的原子。

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16、

What's the definition of the covalent bond?

共价键的定义是什么？

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17、

The exploration on ionicity standard in covalent bond

共价单键离子性标度的探讨

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18、

A new approach on covalent bond theory& brief introduction of the hypothesis of electron hole pair

共价键理论新探&电子空位对假说简介

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19、

Empirical formulas for calculating covalent bond length

计算共价键长的经验公式

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20、

Increase of covalent bond ( S S) among proteins;

蛋白质分子间共价键（S S）力增大；

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21、

Relationship between the covalent bond energy of sulfides and their precipitation behavior in steel

钢中部分硫化物共价键能与其析出行为的关系

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22、

Further study is needed before the origin of the covalent bond can be considered a settled question.

需进一步深入研究方能解决共价键的起源问题。

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23、

Disulfide bridge In PROTEINS, a covalent bond formed between the sulfhydryl (-SH) groups of different cysteine molecules.

在蛋白质中两个半胱氨酸残基的两个巯基之间形成的共价键。

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24、

The role of electric spin forming of covalent bond

电子自旋在共价键成键中的作用

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25、

Proving the empirical relations of the covalent bond lengths with a approximate physical model

共价键长间经验关系的近似模型证明

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26、

A substance that provides a pair of electrons for a covalent bond with an acid.

能够提供一对电子给一个酸形成共价键的化合物。

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27、

Composite structural model containing covalent bond cross-linking non-chemical bond association is proposed for sedimentary organic matter.

根据溶胀-抽提机理研究分析，作者首次提出了沉积有机质中包含共价键交联结构和分子间非化学键缔合结构在内的新的复合结构模型。

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28、

A covalent bond in which both electrons are provided by one of the atoms.

两个电子都由一个原子提供的共价键。

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29、

Variation Rule of Covalent Bond Length and Its Calculation Method

共价键长的变化规律及计算

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30、

Silicon carbide was a strong covalent bond compound, which had favorable high temperature, electricity, mechanism and chemistry capability.

碳化硅材料是共价键极强的化合物，具有良好的高温性能、电性能、机械性能和化学性能。

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