金属键

The complex decomposes activated substances with methylene, can promote formation the chemical bond between fluorine rubber and silane coupling agent; meanwhile, these activated substances can produce many kinds of amino resin containing a large number of activated function in the course of vulcanization, and improves adhesion forces with metal.

络合物分解生成具有活性亚甲基的物质，促进氟橡胶与硅烷偶联剂生成化学键，同时，这些活性物质在硫化过程中生成多种具有氮亚甲基结构特征的、含有大量活性基的氨基树脂，提高了与金属的粘接力。

The complex decomposes activated substances with methylene, can promote formation the chemicalbond between fluorine rubber and silane coupling agent; meanwhile, these activated substances canproduce many kinds of amino resin containing a large number of activated function in thecourse of vulcanization, and improves adhesion forces with metal.

络合物分解生成具有活性亚甲基的物质，促进氟橡胶与硅烷偶联剂生成化学键，同时，这些活性物质在硫化过程中生成多种具有氮亚甲基结构特征的、含有大量活性基的氨基树脂，提高了与金属的粘接力。

An algebraic expression consisting of three terms connected by plus or minus signs.

由一个金属离子与两个或两个以上非金属离子构成配位键的过程。

Their cation binding behavior to alkali and heavy metal ions was evaluated by solvent extraction of aqueous metal picrates.

进而采用溶剂萃取的方法研究了它们与一价金属阳离子的键合行为。

While Xu's covalence new concept on atom and molecular fragment are applied to describe bonding characters for these studied systems.

含过渡金属体系的电子结构、化学键和磁学性质的研究是当今无机化学领域里活跃的研究方向之一。

The Pd-Cu/C catalysts were shown to have the face centered cubic crystal structure. This could indicate that the addition of Cu shortened the Pd-Pd distances in the crystal lattice, and therefore –HO(subscript 2ads) and O-O could be better adsorbed on the surface of the catalyst. When NaBH4 was used as the reducing agent, and the atomic ratio of Pd to Cu was 3:1, the resulting catalysts had an average particle size of 3. 4nm and showed the best catalytic performance. The electrochemical active surface are a of Pd3Cu/C was 38.9m^2/gPd and the oxidation reduction reaction activity of the Pd3Cu/C catalyst was much higher than that of the Pd/C catalyst. The electrochemical activity of the Pd3Cu/C catalyst was comparable to that of a commercial Pt/C catalyst.

结果表明：催化剂中Pd与Cu的物质的量之比与预设值相近，Pd和Cu基本被全部还原；Pd-Cu/C催化剂为面心立方结构，元素铜的加入使催化剂的Pd-Pd间距缩小，从而HO(下标 2 ads)和OO键能更好地吸附在催化剂金属表面；当采用NaBH4为还原剂，Pd与Cu物质的量比为3：1时，催化剂(Pd3Cu/C)的平均粒径为3.4 nm，催化剂的催化性能最好，电化学活性表面积EAS达到38.9平方公尺/gPd，电化学性能较Pd/C催化剂有很大提高，接近Pt/C商用催化剂。

Up to now, only a few well-defined metal complexes have been found to be able to hydrolyze DNA phosphodiester bond.

迄今为止，人们仅发现了为数不多的能够水解断裂DNA的磷酸二酯键的金属配合物。

In addition, by using bondtype and polyhedron cluster type index methods to analyze the transformation of the microstructure, not only the key role of icosahedron in amorphous formation and stability can be explained, but also the solidification processes and the configuration characteristic of amorphous metals understood deeply.

此外采用键对及原子多面体类型指数法对凝固过程中微观结构组态变化的分析，不但能说明二十面体结构在非晶态合金形成和稳定性中所起的关键作用，又有助于对液态金属的凝固过程、非晶态结构特征的深入理解。

The method of self-consistent field of the intermediate neglect of differential overlaphas been used in the calculations of the binuclear cluster, trinuclear unit of hexanuclear clusterand octanuclear clusters. The results are described as follows: The high-lying MO's of thetrinunclear and binuclear cluster are mostly composed of d-orbitals of the metal cores, and areconsidered as M-M bonding orbitals.

应用INDO／S方法对二核簇合物、六核簇合物中的三核片断和八核簇合物进行了计算，结果表明，二核簇合物与三核簇合物的前线占有轨道主要是由金属簇芯的d轨道组成，是M-M成键轨道。

The research of SVMP is mostly related the mechanism of coagulation. Take the SVMP of Naja mocambique mocambique as an example, it will cleave GPIb of platelet, making the bonding of GPIb and VWF factor of membrane failed, then the coagulation will be stopped.

蛇毒金属蛋白酵素的研究大部分与凝血机制有关，例如所要纯化的莫三比克眼镜蛇蛇毒金属蛋白酵素，其会切断血小板上的GPIb，而造成GPIb无法与膜上的VWF factor形成键结，而无法进行凝血的步骤。

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。