查询词典 CE

In this paper, nanopowders of rare earth oxides and tungsten were prepared and 0-3 type nano-composit rare earth tungsten thermionic emission materials were fabricated with novel technics. The raw material selection, preparation technic parameter, structure, physical and chemical characteristic, the rare earth distribution and the emission behavior were studied. The influence between the active layer and the thermionic emission performance, rare earth elements diffusion and distribution along depth were investigated in detail. The surplus RE formation and the electron transfer were discussed in theoretically. The thermionic emission current density of the single surplus RE on the active layer was educed. We adopted "liquid-liquid mixing, freeze-drying and two stage-reduction" working step firstly to produce the RE-W nanopowders including La-W powder, Ce-W powder and Y-W powder.

本文采用细化显微组织的新工艺，制备了纳米稀土钨粉末和0-3型纳米复合稀土钨热电子发射材料，探讨研究其原料选择、制备工艺及参数、结构特征、物理和化学特性、稀土分布均匀性、以及热电子发射特性；系统研究了稀土元素的高温扩散情况、高温状态下活性层中稀土的纵向深度分布、以及表面活性物质和活性层厚度对热发射性能的作用；从理论上分析阐释了超额稀土的形成及其电子的传递过程；并从理论上推导了活性层中单个超额稀土的热电子发射电流密度。

Enantiomeric separation of promethazine and thioridazine, unstable at room temperature, was performed at temperatures down to 3℃ on a lab-built-up CE instrument.

研究了手性药物异丙嗪和硫利达嗪的低温手性毛细管电泳分离，利用实验室自制的低温毛细管电泳仪，成功拆分了它们的混合物。

Detectability of 0.7mg/L for pseudoephedrine hydrochloride, was achieved at a sample throughput rate of 24 times per hour which is 30% lower than that obtained by HDI-based conventional CE.

在24次/h的采样频率下，盐酸伪麻黄碱的检测限为0.7mg/L，比采用压力进样的毛细管电泳法所得的检测限低30%。

However, the Greek topographer Ptolemy makes a mention of a pass through the Zagros mountains which was in his age, the second century CE, still called the 'Sagartian gate'.

但是，希腊topographer 托勒密提出了提到通过扎格罗斯山脉这是他的年龄，第二个世纪的行政长官，仍称为' Sagartian门'。

Walking distance of the original WWF Hong Kong of ce, near the Tramway Path, it limits the

新办事处就在缆车径的办事处附近，职员可步行而毋须乘坐交通工具往返两个办事处

Furthermore comprehensive analysis and evaluation have been given on the application of CE in research and manufactures of the air-traffic-control transponder.

对于并行工程在空管应答机研制中的应用功效作了全面的分析评价。

With a view to locating the lowast state of trebly ionized cerium, the absorption spectra of CeCl3, and Ce2(SO4)3 solutions are examined between 2,000 A and

本文从理论及实验方面讨论Ce~之最低能位问题。

Gargle twi ce a day with warm salt water (use Listerine if you don't trust salt).

每天用温盐水（或李斯德林漱口水，如果你不太相信盐水有效的话）漱口两次。

Women bl i nk nearl y twi ce as much as men.

女人眨眼是男人的两倍。

Which is which, what's left as referen ce should have no p ull or i ncompletion associated with

即无影响力，又不存在没有了结的工作，它仅仅充当你的资料库而已。

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。