查询词典 alkaline earth

The preparation methods of ultrafine alkaline earth aluminate and its properties were reviewed in this paper.

对超细碱土铝酸盐长余辉发光材料的制备方法及其制备后产品的性能做一综述，分别介绍了燃烧法、溶胶-凝胶法和水热法在制备超细碱土铝酸盐长余辉发光材料中的应用。

The experiments show that the alkaline earth metals Ca,Mg do not interfere determination results.

实验表明，较大量的基体存在对测定结果无明显影响，但可与试剂反应的K＋、产生正干扰。

The alkaline earth elements are metallic elements found in the second group of the periodic table.

碱土金属是ⅡA族中的金属元素。

On experimental side, the reactions between alkaline earth metal atoms andhalogenated hydrocarbon molecules have been extensively studied.

在实验方面，碱土金属与卤代烷烃的反应成为人们广泛研究的对象。

In this paper, in order to solve the FAAS determination of alkaline earth metal in a lower sensitivity of the issue have been introduced by a sense of its flotation.

本文初步试验了十八冠-苦味酸体系对锶萃取的影响，结果在各种条件下均不能取得较好的萃取效果。

More broadly, ammonium hydroxide and soluble hydroxide s of the alkaline earth metals are also called alkalies.

更广义的范围包括碱土金属。

Local groundwater salinity up to 1-3 g C l, the distribution of flowering alkaline earth.

局部地下水矿化度达1—3克C升，分布有花碱土。

Based on the pioneers' research work, the theoretical calculations have been performed on the interactions between the alkaline earth ions and aromatic systems.

在前人研究一价离子的基础上，进一步研究了金属离子，特别是碱土金属离子与芳环体系的相互作用。

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 stability of alkaline earth sulfides can be improved by two methods, one is by coating with fluoride or oxides, and another is by forming of complex sulfides with Ga.

可通过两种方法改善碱土硫化物的稳定性，其一是通过用氟化物或氧化物的包覆，另一是通过与Ga生成的复合硫化物。

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。