碱土金属

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。

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。

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 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。

The characteristics of deoxidization of alkaline-earth metals -contained compound alloys has been introduced in this paper, conclusion can be drawn that it will be promising developing alkaline-earth metals -contained alloys which can be applied in purified steel manufacture.

介绍了碱土复合合金的脱氧特性，指出开发适用于纯净钢的碱土金属复合合金有重要的应用价值。

By means of static and dynamic experiments, lots of research on the effect of micro-quantity heavy metal ions removal by weakly basic anion exchange resins from drinking water with alkali metals, alkaline-earth metals and anions at high concentration, has been done.

本文采用静态和动态两种试验方法，对弱碱性阴离子交换树脂在碱金属、碱土金属离子以及阴离子相对较高浓度的背景下去除饮用水中微量重金属离子（以Hg2+为研究处理对象）的效果进行了大量试验研究。

The results showed that the addition of oxides and carbonates of some alkaline-earth metals in sulfur fixation reagent will enhance the decomposition temperature of CaSO4 by more than 50℃, which confirmed the effect of these additives on prohibition of CaSO4 decomposition.

结果表明，氧化物系列和碱土金属碳酸盐系列复合固硫添加剂均比CaO单独使用时使CaSO4推迟50℃多分解，对固硫产物CaSO4晶体在高温下的分解有明显的抑制作用。

We explore theoretically the feasibility of functionalizing carbon nanostructures for hydrogen storage, focusing on the coating of C60 fullerenes with light alkaline-earth metals.

文章从理论上研究了轻碱土金属覆盖的富勒烯作为储氢介质的可行性。

In a word, WBAER can effectively remove micro-quantity HMI from DK with alkali metals, alkaline-earth metals and anions at high concentration.

最后得出结论：应用弱碱性阴离子交换树脂能在碱金属、碱土金属离子以及阴离子相对较高浓度的背景下有效地去除饮用水中的微量重金属离子。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。