查询词典 cathode

Then, this paper researches the effects of the single cell cathode porosity distribution of gas diffusion layer on the cell performance from analytical and statistical point of view.

然后，从解析和统计的角度对单电池阴极扩散层孔隙率的分布对电池性能的影响进行了研究。

The study focuses on transport phenomena of cathode gas diffusion layer of PEM fuel cell by using two-phase flow model. Liquid water saturation and oxygen concentration profile in gas diffusion layer and polarization curve are investigated by numerical simulations.

本研究主要探讨质子交换膜燃料电池阴极气体扩散层内的两相流传输现象，利用数值方法求解出燃料电池阴极气体扩散层内液态水饱和度分布、氧气浓度分布以及性能曲线。

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The cathode is generally one of three materials: a layered oxide, such as lithium cobalt oxide, one based on a polyanion, such as lithium iron phosphate, or a spinel, such as lithium manganese oxide, although materials such as TiS2 were originally used.

阴极通常是以下三类材料：一种层氧化物，例如钴酸锂、一种阴离子聚合物，例如磷酸锂铁，或者是一种尖晶石，例如锰酸锂，象例如二硫化钛之类材料曾经是最初使用的材料。

K| cathode ,kathode

n。负极，阴极

The polarization curve is not sufficient for a reliable and unique validation of a PEMFC model since different parameters can lead to an identical polarization curve. A three-step validation approach is proposed for a complete and unique validation. These three steps are:(1) validated by the global polarization curve,(2) validated by the local current density distribution curve, and (3) validated by the cathode over-potential and anode over-potential versus current density curve. The results from the comparison of four flow-fields show that the PEMFC performance of the flow-fields decreases in order by interdigitated, metal foam, pin-type and parallel.

通过PEMFC参数敏感性研究发现，PEMFC性能受多种参数的影响，这些参数可分为非敏感性参数、敏感性参数和高敏感性参数；与阳极侧参数相比，PEMFC性能对阴极侧的参数更敏感；不同参数值的组合可以得到几乎完全相同的极化曲线，因此电池的极化曲线不足以用于验证数学模型的唯一性与可靠性；为验证PEMFC数学模型的唯一性与可靠性，提出了模型验证的三步法：极化曲线验证、局部电流密度验证和阳极总过电位与阴极总过电位验证。

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Cathode ray tubes are used as the display device in television sets and computer monitors, and magnetrons are the source of microwaves in microwave ovens.

目前，由于消耗功率及体积的考量，真空管多半只运用在少数的特定用途中，特别是高功率高频的通信用途，但近年来，或许是怀旧的气氛使然，某些特定音响用途的真空管再次流行，形成消费电子领域奇特的风潮。另外，像是阳极射线管，X射线管等等则是属于特殊的真空管。

With the development of electronics technologies,lithium ion secondary battery using lithium manganese oxide as cathode would be widely used.

随电子技术的发展，以氧化锰锂为正极的锂离子二次电池将得到广泛的应用。

In this paper,the latest progress on lithium manganese oxide as cathode materials of lithium Ion secondary battery was reviewed.

综述了最近几年对于锂离子二次电池正极材料氧化锰锂的研究。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。