查询词典 covalent

The results show: the strongest bond is the Al-Al bond in the segregated cell without containing vacancy, where the Al atomic covalence radius is greater than that of Li atom in the cell; 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. Since the difference of electronagativity between the Al and Li atoms is obvious, it is inclined to formed the Al-Li segregated cell of short range order structure in the condition of vacancy present. The short range order structure containing vacancy is probably the embryo or precursor structure of the metastable phase δ′(Al3Li). Because the strongest covalent bond in the Al-Li-vacancy segregated cell in alloy formed in quenching is the main strength reason for supersaturated solid solution of alloy. The bond net of succeeding precipitation of δ′(Al3Li) has the picture of anisotropic Al-Al bonding and the bond intensity enhanced. Since the δ′(Al3Li) is coherence with matrix, the bond net strength is enhanced by the precipitation of δ′(Al3Li) and so strengthen the alloy.

计算结果表明：不包含空位的偏聚晶胞的键络最强键为Al—Al键，其中Al原子的共价半径较Li原子的共价半径要大；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；在空位存在的情况下，由于Al原子与Li原子的电负性相差明显，促使Al和Li原子结合，倾向形成Al-Li短程序结构偏聚区，这种含空位的短程序结构很可能就是δ′(Al3Li)亚稳相的前兆结构和生长胚胎；由于Al-Li-空位有序偏聚晶胞的Al—Li键络比基体键络要强许多，因此，淬火过程中合金生成的Al-Li-空位偏聚晶胞对合金过饱和固溶体起主要强化作用；后续析出的δ′(Al3Li)亚稳相键络各项异性显著，键络强度明显提高；由于Al3Li与基体共格，其大量均匀弥散析出起到提升基体整体键络强度，同样对合金产生强化作用。

The results show: the strongest bond is the Al-Al bond in the segregated cell without containing vacancy, where the Al atomic covalence radius is greater than that of Li atom in the cell; 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. Since the difference of electronagativity between the Al and Li atoms is obvious, it is inclined to formed the Al-Li segregated cell of short range order structure in the condition of vacancy present. The short range order structure containing vacancy is probably the embryo or precursor structure of the metastable phase δ'(Al3Li). Because the strongest covalent bond in the Al-Li-vacancy segregated cell in alloy formed in quenching is the main strength reason for supersaturated solid solution of alloy. The bond net of succeeding precipitation of δ'(Al3Li) has the picture of anisotropic Al-Al bonding and the bond intensity enhanced. Since the δ'(Al3Li) is coherence with matrix, the bond net strength is enhanced by the precipitation of δ'(Al3Li) and so strengthen the alloy.

计算结果表明：不包含空位的偏聚晶胞的键络最强键为Al-Al键，其中Al原子的共价半径较Li原子的共价半径要大；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；在空位存在的情况下，由於Al原子与Li原子的电负性相差明显，促使Al和Li原子结合，倾向形成Al-Li短程序结构偏聚区，这种含空位的短程序结构很可能就是δ'(Al3Li)亚稳相的前兆结构和生长胚胎；由於Al-Li-空位有序偏聚晶胞的Al-Li键络比基体键络要强许多，因此，淬火过程中合金生成的Al-Li-空位偏聚晶胞对合金过饱和固溶体起主要强化作用；后续析出的δ'(Al3Li)亚稳相键络各项异性显著，键络强度明显提高；由於Al3Li与基体共格，其大量均匀弥散析出起到提升基体整体键络强度，同样对合金产生强化作用。

Shuenn is a covalent bond uniform crack more energy, so you have selected the use of UV-radiation energy raises the line as an energy raises one of the main form.

顺为共价键均均裂需要较大的能量，所以选择了采用紫外光线的辐射能引发作为能量引发的主要形式之一。

The results show that the covalent electron number and bond energy in structure cells can be improved by adding proper alloy elements and carbon in α-Fe matrix, thus the matrix can be strengthened.

结果表明，在α-Fe基体中加入适量的合金元素和C，可提高结构单元的共价电子数n和键能E，强化了基体。

Peptide bond: A covalent linkage formed between the α-carboxyl group of one amino acid and the α- amino group of another.

肽键是由一个氨基酸的α-羧基与另一个氨基酸的α-氨基脱水缩合而形成的化学键。

The results indicate that improving temperature to reflux, using low polarity solvent as dispersion medium and proper molar ratio of tetrabutyl titanate to stearic acid can bring out good modification. The function of tetrabutyl titanate is to react with the surface hydroxyl groups and adsorbed H2O on the powder particles to produce new binding sites such as M—O—Ti—OC4H9and M—O—Ti—OH, which can easily react with the carboxylic acid. As temperature increases from room temperature to reflux temperature, the reactions between RCOO- and Ti change from coordinate bonds to covalent bonds, which makes the carbon chains of stearic acids more strongly bound with the powder particles surface.

研究结果表明，提高处理温度、适当增加复合改性剂中硬脂酸的量并选用极性弱的有机溶剂可达到比较理想的改性效果；钛酸四丁酯的作用是与粉体粒子表面的羟基以及吸附水反应产生偶联点，如M—O—Ti—OH，这些偶联点易于与羧酸反应；在低温时RCOO-与偶联点的Ti之间以配合物的形式发生作用，在回流温度下处理时，主要发生酯化反应，使硬脂酸更牢固地嫁接到粉体粒子表面，改性效果更好。

The basic structure of chromogen in PFBs remains the same, so PFBs have fluorescent properties of traditional FBs. Covalent bonds between chromogen and macromolecule chains enhance their photochemical stability, increase their whitening performance and fluorescence quantum yield.

聚合型荧光增白剂中基本发色团的结构不变，具有传统荧光增白剂的光学性能；发色团与高分子链间的共价键使其光化学稳定性大大增强，增白性能和荧光量子产率显著提高。

UV and fluorescence spectrometry,〓H-NOESY charactered the non-covalent interaction between cinchonine and CDs in solution. The results indicated that the possible stoichiometry of complex formation is 1: 1 (guest: host ratio) and 2: 1 inclusion complexes coexistence simultaneously in solution.

用紫外光谱、荧光光谱、二维核磁共振等手段研究了辛可宁与β，γ-环糊精在溶液中的非共价作用，发现它们之间是以1：1结合以及2：1结合两种方式模式的方式存在的。

In order to reduce the composite probability of Cd and O, simultaneity , to enhance the Cd-N covalent characteristics and improve the hole concentration, it is important to control the proper concentration of Cd and O.

研究表明共掺体系中，适当控制Cd和O的浓度，可以减小Cd和O的复合机率，加强Cd-N的共价特性，对改善AlN的p型特性有重要意义。

The test results showed that the amount of this kind of function material to conjugate proteins were larger than 1.5ig/mm2and its one time adsorption rate was larger than 80% and can satisfy the requirements for solid-phase radioimmunoassay. Test results showed that this polymer-NHS-ester can connect with proteins through covalent bounds under mild conditions This technical method will supply a type of new material for solid-phase radioimmunoassay.

实验证实，这类聚合物NHS酯可在温和条件下与蛋白反应，使蛋白以共价键结合方式固定在聚合物上，这种功能材料对蛋白的结合量大于1.5μ／mm~2，对蛋白的一次吸附率大于80％，能满足固相放免分析的要求，将为固相放免分析提供一种新材料。

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。