查询词典 alkaline earth

Alkali metal; Alkaline-earth metal; ionic salvation; ionic association ; quantum chemistry

碱金属；碱土金属；离子溶剂化；离子缔合；量子化学

In this study we use the oligomers of amino ethylene series as matrix and introduce dithiocarbamate group to adsorb merely heavy metal ions. Because of its special structural characteristics , dithiocarbamate can combine with a great number of heavy metal ions to produce insoluble complex compound except for alkali metals and alkaline earth metals.

本研究系将氨基乙烯系列之寡聚物(oligomers of amino ethylene series)当做基质引入只对重金属离子具有特殊螯合能力之荒酸盐，除了与碱金属及碱土族外荒酸盐与其他重金属离子都能形成不溶性错合物。

With alkali-voron-silicon as the basis and addition of alkaline earth composite fluxing agent,a kind of leadless fluxing agent is developed.

以碱-硼-硅系统为基础，加入碱土金属氧化物复合助熔剂，研制无铅釉上彩熔剂。

Based on alkali- boron- silicon system, a compound function of several alkali metals, alkaline- earth metals and admixtures is used to replace that of lead to develop environment- friendly, leadless flux for overglaze colors with low bismuth content.

在碱-硼-硅系统基础熔剂中引入外加剂，通过多种碱金属、碱土金属及外加剂等复合效应来代替铅在熔剂中的作用进而研制低铋环保型无铅熔剂。

In the concentration of 0~1 mol?L^(-1), the chemical shift of 17O-NMR δ(H2^17O in aqueous solutions of alkali chloride, alkaline earth chloride, sodium halide or some common oxysalt were measured.

在小於1mol？L^(-1)的浓度范围內，测试了硷金属、硷土金属氯化物、卤化钠及其它常见含氧酸盐溶液的17O-NMR化学位移δ

Alkaline earth metal Any of the six chemical elements in the second leftmost group of the periodic table (beryllium, magnesium, calcium, strontium, barium, and radium).

碱土金属：碱土金属是元素周期表中的IIa族元素，即铍、镁、钙、锶、钡、镭。

Which appeared in the Tang Dynasty , is to decoct the brine extracted from the ash or alkaline earth in flat plates .

&煎盐&则指提取柴灰或碱土中的卤水，用浅而阔的盘熬干以制取盐，这一专称唐代始见。

The investigation and comparison of chlorination activity of chloroperoxidase from Caldariomyces fumago in metal ion solutions to those in pure buffer indicated that CPO could be effectively activated by some alkaline-earth metals and transition metals.

基于氯过氧化物酶的卤化活性分析，发现某些碱土金属（Ca2+， Mg2+）和过渡金属（Co2+， Ni2+）对CPO具有明显的激活及稳定化作用。

The alkaline-earth metal complexes with mucic acid was successfully prepared via gel formation and characterized by elemental analysis,FT-IR measurements.

结果表明，粘液酸的两个羧基和四个羟基均能参与配位键的形成，而中心离子 Ca~(2+)、Sr~(2+)、Ba~(2+)与配体粘液酸的配位状况存在着一定差异。

During the period of the mineralizing, the surroundings of studying are is continental facies. The aggraded materials who have experienced long time efflorescence and leaching have corrosion and eluviated the alkali metals, alkaline earth, silicon, iron and so on. The schwer l Al2O3 is keeped down. So this condition made the enrichment of the aluminum and the bauxite is formed.

铝土矿成矿时期，研究区为陆相环境，已沉积物质在炎热潮湿的气候条件下经历了长期的风化淋滤作用，将碱金属、碱土金属、硅、铁等溶蚀淋滤掉，难溶的Al2O3残留下来，造成铝的富集，形成了铝土矿。

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。