钒

In the extraction of vanadium from stone coal microwave could change the appearance and surface of stone coal.

微波在石煤中钒的提取过程中可改变石煤的表面形貌，在微波处理25分钟后，其比表面积增加30%。

Experiment results show that the leaching rate of vanadium in roasted stone coal in water is lower when mass fraction of calcium in stone coal is higher.

试验发现，对来自同一矿区的矿样，当其中钙元素质量分数较高时，熟料中高价钒的水浸出率较低。

The results indicate that Vanadium fettered in crystal structure of clay mineral can been untied by NaCl in the process of extracting Vanadium from stone coal.

结果表明，NaCl可将束缚在粘土矿物晶体结构中的钒解离出来。

Vanadium oxide thin films are widely used in the field of uncooled IR detecting and imaging for its high temperature coefficient of resistance.

氧化钒薄膜由于具有高电阻温度系数，近年来被广泛应用于非制冷红外探测及红外成像领域。

The VO x(x.5) film has a negative temperature coefficient of resistance of (-1~-4)%K -1 ,and an activation energy of 0.078eV~0.110eV.

对不同温度退火后氧化钒薄膜在10～100℃范围内测定了薄层电阻随温度的变化，得到的电阻温度系数值为(-1～-4)%K-1。

Uncooled infrared detector; Vanadium oxide films; temperature coefficient of resistance; the finite Element Method; porous silicon

信息科技，无线电电子学，光电子技术、激光技术非制冷红外探测器；氧化钒薄膜；电阻温度系数；有限元法；多孔硅

ESR and UV-vis spectroscopic investigations suggested that the tetrahedrally coordinated iron and vanadium species incorporated within the silica framework.

ESR、紫外可见光谱结果表明铁和钒以高度分散的四配位状态存在于分子筛的骨架中。

The kinetics model of thermic decomposition of ammonium ployvanadate { APV） has been explored.

分析了多钒酸铵热分解的动力学模型。

The different factors'n (V / n molar ratio, precipitation pH and calcination temperature effects on the characterization of FeVO4 were discussed and the optimum preparation conditions of triclinic FeVO4 was concluded.

以硝酸铁和偏钒酸铵为原料，在不同n/n摩尔比，不同pH值和不同温度条件下制备了系列样品，优化了三斜型FeVO4的工艺制备条件。

Unalloyed, it is used in high-temperature applications, as a target in X-ray applications, and as a catalyst .

纯金属钒适用于高温，如X射线的目标和催化剂。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。