covalent

covalent

1. Study on the BP Neural Network Algorithm and Its Application in the Covalent Bond Length Calculations

BP神经网络计算法及共价键长计算的研究

2. Coval of Harvard Business School examine the mutual fund industry to determine why people would prefer to invest in stocks of companies located near them.

Coval考察了共同基金市场，并试图解释为什么投资者更青睐本地公司的股票。

3. The results of FT-IR and SEM showed that nano-silica and polylactide are connected with covalent bonds,and inorganic phases are dispersed in polylactide homogeneously.

FT-IR和SEM分析表明,纳米二氧化硅与聚乳酸发生了化学结合,并且均匀的分散于聚乳酸基体中。

4. covalent bond

n. [化]共价键

5. bond energy of covalent bond

[化] 共价键键能

6. length of covalent bond

[化] 共价键键长

7. polarized covalent bond

[化] 极性共价键

8. Several weak molecular interactions responsible for the maintenance of tertiary structure of proteins are covalent, ionic, hydrogen, and hydrophobic or hydrophilic bonds.

一些决定蛋白质三级结构的主要的弱分子作用力为共价键,离子键,氢键,疏水键和亲水键。

9. a chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond.

一种化学键：由两个负电原子（如氧气或氮）及其间的氢原子组成，其中一边是共价键，另一边是离子键。

10. A novel method for covalent attachment of synthetic DNA to glass support

一种玻璃载片共价键固定DNA的新方法

11. The Characteristics of Covalent Bond

三、共价键的特点

12. 3. Crystals may be classified as either ionic or covalent by analogy with molecules.

与分子的情况一样，晶体也可以分为离子键型和共价键型。

13. 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。

14. Keywords Neutral atom;Electronegativity;Effective nuclear charge;Covalent radius;

中性原子;电负性;有效核电荷;共价半径;

15. The cohesion between aluminium and the interlayer is resulted from the metallic bond and the cohesion between the enamel and the interlayer is brought about by the ionic bond and covalent bond.

中间过渡层与金属铝的结合主要通过金属键来实现，中间过渡层与瓷釉层的结合主要是通过离子键和共价键来实现。

16. Chemical and Infrared analysis of purified samples shown that about 10% of total DBM was grafted onto LDPE backbone chain with covalent bond.

产品经二甲苯溶解，丙酮沉淀纯化数次后，由化学分析和红外鉴定表明，在挤出反应中确有40%以上的DBM单体接枝到聚乙烯链上，接枝率可达到0．3DBM／100E。

17. Introduce a Sample and Easy Method to Draw the Electronic Formula of Covalent Compounds

介绍一种共价化合物电子式的简易写法

18. Advances in chemical modification of carbon nanotubes are reviewed with 47 references, including covalent modification and noncovalent modification.

介绍了近年来碳纳米管化学修饰（共价修饰和非共价修饰）方面的最新进展。参考文献47篇。

19. The immobilization methods including absorption,covalent bonding, and combination of above two methods) and classification of inulinase were introduced.

介绍了酶固定化（包括吸附法、共价法以及吸附法与共价法结合使用方法）及菊粉酶的种类。

20. The strengths of ionic and covalent bonds mainly decrease in LiMPO_4 from Mn to Ni, and the variations of density of state(DOS) show that the electronic conductivity should be increased from Mn to Ni.

从LiMnPO_4到LiNiPO_4, 离子键和共价键强度都降低，再加上态密度的比较都表明，从LiMnPO_4到LiNiPO_4电导率逐渐升高，这与实验结果一致。

21. covalent electron parameters

价电子结构参数

22. Relatively small changes in solution temperature or pH, for example, may cause denaturation, which usually occurs without severing covalent bonds.

例如溶解温度或pH值相对很小的变化可能导致变性,这种特性通常不破坏共价键。

23. Keywords Salophen;covalent modification;amino acid;dipeptide;heme;

共价修饰;氨基酸;二肽;血红素;

24. Covalent modification of horseradish peroxidase and its application in enzyme sensor

共价修饰的辣根过氧化物酶及其在酶传感器中的应用

25. covalent functionalization

共价功能化

26. covalent compound

共价化合物

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

共价化合物能够提供一对电子给一个酸形成共价键的化合物

28. covalent radius

共价半径 共价键半径

29. Keywords Covalent Immobilization;（4'N;NDimethylamino）Flavone3ylMethacralate;Solvatochromism;Optical Fiber Sensor;Water;Ethanol.;

共价固定化;甲基丙烯酸3-（4'-N;N-二甲氨基）黄酮酯;溶致变色;光纤传感器;水;乙醇;

30. covalent immobilization of heparin

共价固定肝素

31. covalent type semi conductor

共价型半导体

32. covalent conjugate

共价复合物

33. The Effect of Ionic Bond with Partical Covalent Character on the Properties of Silver Halide

共价性对卤化银性质的影响

34. Covalent grafting of protein molecule for improving surface performance of polystyrene biofilm media

共价接枝蛋白分子改善聚苯乙烯生物填料表面性能

35. Microscopic theory of hardness of covalent crystals

共价晶体硬度的微观理论

36. covalent electron pair

共价电子对

37. covalent complex

共价配合物

38. covalent bond band

共价键带

39. Materialist Dialectics in the Taking Shape of the Covalent Bond

共价键形成中的唯物辩证法

40. covalent bond graft

共价键接枝

41. orientation of covalent bond

共价键方向性

42. Historical Background of Emergence of Covalent Bond Theory

共价键理论提出的历史背景

43. The Nature of Covalent Bond

共价键的本质

44. covalent carbide

共价键碳化物

45. covalent supporting

共价键负载

46. covalent closed circular DNA(cccDNA)

共价闭(合)环(状)DNA

47. cccDNA(covalent closed circle DNA)

共价闭合环状DNA

48. covalent closed circular DNA

共价闭合环状DNA, 共价闭环DNA

49. The moiety can provide covalent interaction with sugars.

其含有硼酸部分，可以与醣类分子以共价键键结。

50. A molecule or ion that can combine with another by forming a covalent bond with two electrons of the other.

分子，离子可通过两个电子形成共价键而结合在一块的分子或离子

51. Two principal proteins modifications are found in lipid rafts: one is covalent binding to glycosyl-phosphatidylinositol (GPI), the other is myristoylization.

分布于脂筏的分子主要有两种形式的蛋白修饰：与糖基磷脂酰肌醇(GPI)相连，或被肉豆蔻酸酰化/软脂酸酯酰化。

52. Allosteric enzymes and Covalent regulatory enzymes

别构酶和共价调节酶

53. covalent couphng

化学偶联

54. Chemical intuition tells us that ionic terms should make substantially less contribution to the wave function than covalent terms

化学的直观告诉我们离子项对波函数的贡献比共价项小得多。

55. 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。

56. Keywords cysteine - nano - Au self - assembly membrane;piezoelectric immunosensors;covalent bond;

半胱氨酸-纳米金自组装膜;共价键合;压电免疫传感器;

57. Keywords monofunctional catalase;tetrameric structure;heme;covalent bond between protein side chains;inner channel;

单功能过氧化氢酶;高级结构;血红素;肽链侧链共价键;内通道;

58. Keywords piezoceramics;electron structure;covalent bond order;piezoelectricity;

压电陶瓷;电子结构;共价键级;压电性能;

59. Depending on electron distributions resulting from covalent or ionic bonding of structural sub-groups,proteins can be either polar or nonpolar at a given pH.

取决于其电子分布会产生共价或离子结合的结构次团，在特定的氢离子指数下，蛋白可以是极性或非极性。

60. 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。

61. Another is the Lewis definition (also 1923): An acid (see electrophile) is a chemical that can accept an electron pair from a base (see nucleophile), which they share to form a covalent bond.

另一种理论是路易斯（Lewis）理论（也是在1923年发表）：酸（参阅electrophile）就是能由碱（参阅nucleophile）接受一个电子（electron）对形成一个共价键（covalent bond）的化学物质。

62. Additionally, covalent modifications have effect on the mobility of some proteins.

另外蛋白质的共价修饰可对某些蛋白质的运动产生影响。

63. reversible covalent chemistry

可逆共价化学

64. a molecule or ion that can combine with another by forming a covalent bond with two electrons of the other

可通过两个电子形成共价键而结合在一块的分子或离子

65. a compound containing the covalent iodine radical.

含有共价的碘基的化合物。

66. These groups may provide sites for subsequent covalent coupling of biomolecules.

图谱解析得改性表面具有含氮活性基团（如氨基等）。

67. A covalent enzyme-substrate intermediate with saccharide distortion in a mutant T4 lysozyme.

在一个群从变型T4溶菌酶中的一个带有糖变形的共价酶－底物中间物。

68. In covalent bonding, atoms share electrons

在共价键联中，原子共有电子。

69. When exposed under UV irradiation, diazonium and acrylate groups can react with each other and the interaction within DAR/PAA multilayer assemblies can be converted into covalent bonds.

在紫外光照下，膜中与重氮基团相连的苯环和羧酸盐基团反应生成羧酸酯，提高了膜的稳定性。

70. Covalent Immobilization of Oligonucleotides onto Solid Substrates in the Manufacturing of DNA Chips

基因芯片制作中寡核苷酸共价固定方法研究进展

71. Keywords MWNTs;4;4'-diaminodiphenylmethane;covalent modification;solubility;

多壁碳纳米管;4;4’-二氨基二苯甲烷;共价修饰;溶解性;

72. In our opinion, the hardness of covalent crystals is intrinsic and equivalent to the sum of resistance of each bond per unit area to indenter.

大多数功能材料是多元晶体，因而发展复杂晶体硬度的计算方法具有重要意义。

73. Keywords austenitic crystal cell;strong covalent bond;logarithmic value of pearlite pregnant time（LPT）;

奥氏体晶胞;强共价键;珠光体孕育时间对数值（LPT）;

74. Covalent binding of antibody is particularly beneficial if a detergent has to be used as the blocking agent of the residual surfaces.

如果去污剂作为残留表面的封闭剂，那么抗体的共价结合就特别有用。

75. The classification of solids into molecular, metallic, covalent (polymeric) and ionic types is useful,provided it is recognized that there are no hard boundaries between them.

如果认为各种固体间没有明确的界线，那么把固体分成分子的，金属性的，共价原子的（聚合体的)和离子的等等是有用的

76. Polyanhydrides exhibit surface erosion, which may prevent covalent aggregation by reducing wa...

将以下一段话的每一个句子换个说法，意思不变，望高手帮帮忙！

77. The Study of Applicability of Chemical Boond Theory in Small Covalent Compound

小分子共价化合物结构理论的适用性研究

78. They have the properties of covalent solids, ionic crystals, and transition metals at the same time.

就物理性质来讲，过渡金属碳化物同时具有共价性固体、离子性晶体、过渡金属的优点。

79. Keywords urate oxidase;recombinant proteins;Escherichia coli;covalent cross-linking;polymerase chain reaction;

尿酸氧化酶;重组蛋白质类;大肠杆菌;共价交联;聚合酶链反应;

80. A polar covalent bond happens when one electron has a stronger electrical attraction for the shared electrons than the other atom(s).

当一个原子对共享电子的电吸引强于其它原子时，形成极性共价键。