查询词典 alkaline earth

They found that pyrolytic reactions were catalyzed by alkaline earth metal cations in carbonates and inhibited by silicates.

Karabakan和玉&俄罗斯&m(1998)矿物矩阵的影响石油页岩在转换成有机物的干酪根在热解反应。

The results show that when alkaline earth metal oxides are used as the medium, the products are hexacoordinate silicon complexes, and that under the optimum synthetic conditions, the conversion yields of barium salt and calcium salt are greater than 90% and 60% respectively.

结果表明：以碱土金属氧化物为介质时，合成产物为六配位体有机硅化合物；在最佳合成条件下，钡盐的转化率达90%以上，钙盐的转化率在60%以上。

In the second chapter, twelve compounds constructed by arenedisulfonates and metal ions such as alkali, alkaline earth and transition metal ions have been synthesized and structurally characterized.

第二章描述了在水溶液条件下芳烃二磺酸根离子与碱金属离子、碱土金属离子和过渡金属离子形成的十二个化合物的结构。

It was found that aluminum exhibits minimum EDAX analysis showed that alkaline earth metal ions and EDTA have no contribution to the formation of the surface film on aluminum.

实验结果表明铝在含0.02 mol·L-1 EDTA和饱和Ca2、Sr2的溶液中具有最小的腐蚀速率。

Na and Li belong to alkaline earth metal, but their effects on the electrical properties of WO〓 ceramic are different.

Na〓WO〓和Na〓CO〓的掺杂作用与Li的作刚很不相同，尽管二者同属第一主族。

The dynamical process of spectral hole burning of Sm〓 doped in alkaline earth metal fluorine halide mixed crystals was studied.

对Sm〓掺杂碱土金属氟卤化物的光谱烧孔的动力学过程进行了讨论。

Different alkaline earth metal ions, such as Ca(superscript 2+), Mg(superscript 2+) and Zn(subscript 2+), were introduced and their influences on the working characteristics, crystalline behavior as well as the electrical properties were studied.

通过引入Ca(上标 2+)，Mg(上标 2+)，Zn(上标 2+)等不同的二价金属离子，重点讨论了它们对玻璃的特征温度、分相析晶行为以及膨胀系数、电学性质的影响。

The mechanism of thermal decomposition for alkaline earth metal benzoate s was studied by using TG,DTA,IR and gas chromatography_mass spectrometer.

用DTA和TG研究了碱土金属苯甲酸盐在氮气气氛中的热分解过程，并用红外光谱、色-质联用表征了热分解产物。

The complexation properties of them with alkali and alkaline earth metal ions have been investigated by means of visible spectra in solns.

方法简便，产率较高，借助于可见光谱测定，考查了它们在溶液中与碱金属和碱士金属盐等的配位性能。

The alkaline earth calcium presents higher reaction activity comparing to magnesium.

碱土金属钙醇盐为烷氧基提供者制备稀土醇盐其反应活性要高于金属镁醇盐。

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。