查询词典 alkaline metal

Catalysts used for abating the pollution of automobile exhaust emissions were prepared by nonprecious metal oxides, such as the oxides of Ⅰ B,Ⅴ B,Ⅵ B,Ⅶ B,Ⅷ B group, alkaline earth group and rare earth elements.

在实验室用模拟汽车排气，评价催化剂的氧化、还原效率，获得了具有较低起燃温度的催化剂(对于CO低于150℃HC为200℃)，机械强度良好，而且可承受高温冲击(耐温可达900～1000℃)。

The interactions of alkali and alkaline-earth ions and rare—earth metal ions with saccharides, resulting in the formation of saccharide adducts, have been investigated in great detail.

本文主要从糖的构型、构象、金属离子半径的大小和电荷的影响等方面入手分别研究了固体和水溶液中糖与金属离子的配位现象。

Alkaline removal is especially effective with etch-resist inks which contain one or more acid metal chelating groups.

碱性去除特别有效的蚀刻，抗拒油墨含有一个或多个酸金属螯合组。

The highest occupied molecular orbit and the lowest unoccupied molecular orbit are calculated, and the energy gap of the two orbits determines the activity of the reagents, and yet, in an alkaline solutions for flotation, the HOMOs of the corresponding ions decide the rigidity of the reagents and therefore determine the reaction activity with different rigidity metal cations in minerals, which vary flotation performance to different minerals, and the experimental results were verified.

药剂与矿物作用的能量计算结果表明：苯氧乙酸类抑制剂与方解石和一水硬铝石作用后的能量变化均为负值，能量变化有利，可以形成稳定的吸附；而与黄铁矿作用后的能量变化为正，能量的变化是不利的，故不能形成稳定的吸附，表现出较弱的抑制作用。

Products are mainly used in nickel-cadmium, nickel metal hydride, alkaline , lithium batteries and other electric industry.

产品主要应用于镍镉，镍氢，碱性，锂电等电池行业。

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 effects of metal catalysts, alkaline wash and various pretreated activated carbon adsorbents on the sulfur removal rate were investigated.

在功率超声下柴油氧化脱硫工艺研究的基础上，研究了Fe盐、Cu盐的加入和不同吸附剂及其用量对脱硫效果的影响。

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。

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。

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。