碱金属

So the body-centred cubic structure of Li9 has the greatest binding energy for per atom among body-centered regular polyhedral structures of Lin (n= 5 ,7,9,13), which may be a reason for alkali metal crystal adopting the body-centred cubic structure as its unit cell.

故在体心正多面体结构Lin (n= 5 ，7，9，13)中，Li9的体心立方结构有最大的原子平均结合能，这也许是碱金属晶体的晶胞取体心立方结构的一个原因。

The glass transition temperature of the polymers carrying crown ethers as side groups increased when alkali metal ions were added, because the oxygen-metal coordination will lead to the polymer to have order structure.

含有冠醚侧链的高分子在加入碱金属离子后，由于冠醚与金属离子的络合作用导致高分子形成有序结构而刚性增强，其玻璃化转变温度明显提高。

Alkalies, iron, and copper accelerate the reaction.

碱金属，铁和铜均可以加快其反应速度。

Possible geometrical structures and relative stability of Alkali metal azides (CaN6)n (n=1～5) clusters are studied by using the hybrid density functional theory(B3LYP) with 6-311G* basis sets.

利用密度泛函理论在B3LYP/6-311G*水平上对碱金属叠氮化合物(CaN6)n(n=1～5)团簇各种可能构型进行了几何优化，预测了各团簇的最稳定结构。

Electron-Doping by Different Alkali Azides in Layer-Structured Crystals of β-MNCl M=Zr, Hf

篇名 不同碱金属叠氮化物对层状晶体β-MNCl电子掺杂的影响

From the point of view of molecular design, Al is a good candidate to introduce to the BO〓 groups to form a series of new alkali metal aluminum borates.

本论文从分子设计的角度，在BO〓基团中引入Al原子，获得了一系列新的碱金属铝硼酸盐化合物。

Edit this paragraph the reasons for the color reaction of flame When the alkali metal and its salts in the ignition flame, the atoms absorb the energy of the electron from the orbit of low-energy transition to a higher energy orbit, but at a higher energy orbit is unstable electronic, it is fast transition back to a lower energy orbit, then the energy will be redundant form to emit light.

编辑本段焰色反应的原因当碱金属及其盐在火焰上灼烧时，原子中的电子吸收了能量，从能量较低的轨道跃迁到能量较高的轨道，但处于能量较高轨道上的电子是不稳定的，很快跃迁回能量较低的轨道，这时就将多余的能量以光的形式放出。

However, due to the structure of alkali metal atoms in different electronic transition energy when the change is not the same as on the different wavelengths of light, the color reaction from the flame in the experiment see the special flame color, the color spectrum is the spectrum.

但由于碱金属的原子结构不同，电子跃迁时能量的变化就不相同，就发出不同波长的光，，从焰色反应的实验里所看到的特殊焰色，就是光谱谱线的颜色。

The influence of alkaline fluorides on spectroscopic properties and crystalization stability of Yb3+-doped fluorophosphate glasses was studied.

研究了碱金属氟化物对掺Yb3+氟磷玻璃的光谱性质和析晶稳定性能的影响。

The combination of these hydrides with some transition metal complexes exhibits high catalytic activity for the hydrogenation of olefins.

它们具有比一般市售碱金属氢化物高得多的反应活性，并能与过渡金属配合物组成高活性烯烃加氢催化。

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。