查询词典 aluminates

The content of impregnated Ba, Ca aluminates in the bodies can meet the requirements of the conventional impregnated cathode. Emission experiment results show that the space charge limited current density of this kind of cathode has reached more than 30A/cm^2 at 850℃.

发射试验结果表明，这种阴极在850℃的工作温度下空间电荷限制的电流密度超过30A/平方公分，在超过2000h的寿命实验过程中发射仍持续上升，因而在要求高电流密度和一定寿命的微波电子管中具有光明的应用前景。

The silicate is more stable than the aluminate. and have better adaptable, but its luminescence properties do not achieve aluminates\ There a lot of work must be done for improving the luminescence properties of silicate.

而硅酸盐体系化学性质较铝酸盐体系稳定，具有更好的适应性，但硅酸盐体系的发光性能尚未达到铝酸盐体系水平，进一步提高硅酸盐体系的发光性能，还需做更深入的工作。

Years ago, to satisfy the increasing demand of local aluminates, we set up a modern plant in Tianjin, focusing on steel, petroleum and building chemistries. We set up distribution, office and warehouse in various area in China.

林栋经理：早在八年前，为了满足国内日益增长的铝酸盐产品的需要，我们已在中国天津投资建立现代化工厂凯诺斯中国）铝酸盐技术有限公司，主导产品服务于钢铁，石化和建材等行业。

The aluminates are used as the base and the rare earth materials are used as the luminescence center and trap center. The excitation resource can be visible light and man-made light.

它以铝酸盐陶瓷材料为基质，以稀土材料作为掺杂元素形成发光中心和陷阱中心，激发光源可以为目光或人造光源。

XRD results indicated the formation of aluminates on the supported samples calcined at high temperatures, which prevents the transformation ofγ-Al〓O〓 toθ-Al〓O〓 and α-Al〓O〓.

吸附量热结果表明，600℃焙烧的6％K〓O/γ-Al〓O〓具有很强的碱性，且表面积达到160m〓/g，为很好的固体碱催化剂。

D. aimed at synthesizing luminescent materials of phosphates, tungstates, aluminates and other related materials in a hydrothermal and a solvotherml system.

我们在水热体系中合成了磷酸盐类，钨酸盐类，铝酸盐类及相关发光材料。

The premary tests show that three of them can obviously improve the mechanical properties of soft PVC/L-CaCO3 materials;however, they almost heve no effect on PP/L-CaCO3 blends. This suggests that the coupling effect of the aluminates be not only re...

初步试验表明，有3种铝酸酯可明显提高软质PVC／L－CaCO_3共混物的力学性能，但4种铝酸酯对PP／L－CaCO_3共混物的力学性能均无改善，说明铝酸酯的偶联作用不但与它们的分子结构有关，而且和偶联的对象有关。

The main results and conclusions can be organized as follows:(1) The alkaline-earth aluminates and silicates, which can emit the light from violet to red with long afterglow, are prepared by the different methods such as solid-state reaction, sol-gel, and combustion synthesis, etc.

获得了从紫色到红色所有可见波段的长余辉材料，通过对铝酸镏的基体元素比例、合成工艺和共掺杂元素的研究，使SrAl〓O〓：Eu〓，Dy〓的有效余辉时间大大增强，很容易突破30小时。

The product structure, compositional information and spectral properties were carefully characterized by XRD, IR and DTA-TG, and the mineralization mechanism of mineralizer was studied during the process of calcium aluminates preparation.

借助于红外光谱、 X射线粉末衍射、差热-热重分析等手段对不同原料的铝酸钙粉的结构、组成及性能进行了表征和研究，并对矿化剂在合成铝酸钙中的矿化机理进行探讨。

Keeping the oxygen content of liquid steel as low as possible, decreasing the amount of calciumand properly inereasing the residual aluminium in steel, the calcium aluminates formed by deoxida-tion products can be pr...

冶炼时尽量降低钢中的氧量，减少钙量，适当地提高残铝量，使其脱氧产物所生成的钙铝酸盐向着CaO·6Al_2O_3的方向变动，有利于防止点状夹杂的生成。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。