The proton exchange membrane could be sufficiently hydrated when a proton exchange membrane fuel cell operated normally.
PEM燃料电池正常运行时，电池中的质子交换膜应该得到充分润湿。
For the same current density, coefficients of electro-osmotic drag, back diffusion and hydraulic permeation with water content in the membrane increased gradually along the gas flow direction, while net water transport coefficient and proton transport resistance decreased as operating pressure increased; [JP2]at the same time electro-osmotic drag, back diffusion, hydraulic permeation and net water transport coefficients and water content in the membrane increased rapidly, while proton transport resistance decreased, which improved the performance of PEM fuel cells.
分析模拟结果发现，当电流密度相同时，沿气体流动方向，质子交换膜中水的电渗拉力系数、反扩散系数和水力渗透系数逐步增大，而水的净迁移系数逐步减小；同时，质子交换膜的含水量增加，质子传递阻力逐步下降；增大电池的操作压力，电渗拉力系数、反扩散系数、水力渗透系数、水净迁移系数和质子膜的含水量增加，而质子传递阻力下降，使燃料电池的性能得到了提高。
Porous electrode consisting of the gas diffusion layer and the catalyst layer is one of the essential components of PEM fuel cells.
多孔电极是质子交换膜燃料电池的重要部件之一，它由气体扩散层和催化层组成。
And then taking the whole fuel cell unit as a subject, builds up the PEMFC unit empirical model, combining certain thermodynamic theory as mass transfer, diathermancy, etc.
然后以整个燃料电池单池为研究对象，结合一定的传质、传热等热力学原理建立了PEM燃料电池单池的经验模型。
In another room, Pem's brother, Cliff Gardner, dropped the slide between the Image Dissector （ the camera tube that Farnsworth had invented earlier that year ） and a hot, bright carbon arc lamp.
在另一个房间里，徘玛的哥哥——克利夫·加德纳在图像分解器（发恩斯沃思前一年发明的影像管）和碳素弧光灯之间加上了一张幻灯片。
Its main composition is JLX, a non-ionic oligomer that shows cloud point behavior.
PEM 的核心处理剂为聚合醇类水基防塌润滑剂 JLX，JLX是一种非离子型低分子量聚合物，其作用机理是具有浊点特性。
Based on the fuel cell simulation platform, PEM fuel cell power train system is setup.
在建立的燃料电池模型的基础上，建立了燃料电池动力系统模型。
The laboratory test verifies the proposed method. This thesis is focused on the research of PEM fuel cell power train system in a ship also and a PEM fuel cell powered boat is realized.
本文研究了船舶燃料电池动力系统结构，研制了一艘基于燃料电池电力驱动的实验船，简单讨论了混合级联型变换器在燃料电池动力系统中应用的可行性。
Aiming at reducing the cost of PEM, and the further exploration of new IPNmembranes with good performance, a novel partial fluorizated PEM candidate wasalso been prepared.
针对目前全氟磺酸质子交换膜价格昂贵的问题，并为了进一步研究IPN型质子交换膜的特性，本论文还开展了IPN型部分氟化复合聚合物质子交换膜的研究。
Therefore, the thesis mainly concentrated onmodifying the PFSA membrane to lower its methanol permeability, trying to designpartial fluorizated PEM candidate, as well as investigating the structure, themethanol-blocking performance, methanol and proton transport mechanism of thePEM. The main results of the thesis are as follows:1.The effects of organic silica bearing different organic groups on the performancesof the Nafion/organic silica composite membranes.
基于以上研究目标，本论文对现有全氟磺酸膜进行了复合改性以降低其甲醇渗透率，尝试制备了几种新型部分氟化型复合聚合物膜体系，并对质子交换膜的结构、阻醇性能及其可能的物质传输机理进行了研究，取得的主要结果如下：1。
Nutritional marasmus is the most frequent form of PEM in cases of prolonged food shortage.
消瘦型营养不良是PEM中最常见的形式，由长时间食物匮乏所引发。
Use the supplied PEM bolt to ground the pigtail to the new location.
用随附的PEM螺钉接地尾线到新的位置。
Main products include standard parts followed by US PEM, PSM, SOUTHCO and customized parts.
产品主要有按照美国PEM、SOUTHCO、PSM生产的标准件和根据客户要求的非标件。
The authors in this paper did research on the PEM fuel cell performance influenced by the cathode flow channel change, made comparison among PEM fuel cell performances and stability of the different cathode flow channel, optimized the cathode flow channel, and thus found the best combination of the cathode and anode flow.
目的 研究阴极流道变化对PEM燃料电池性能的影响，比较不同阴极流道下的PEM燃料电池的性能和稳定性，优化阴极流道，找出阴阳极流道的最佳组合。
With Certificate Manager you can export and import certificates in DER, PEM, PFX and SPC/PVK formats.
与证书管理器，您可以出口和进口证明书的明镜，质子交换膜，pfx和SPC /养恤保险局的格式。
It is concluded that the impact of the operating pressure on the performance of PEM fuel cell with interdigitated flow fields is weaker than that of the conventional flow fields.
PEM燃料电池中主流的传递机理有两种形式，一种是传统蛇型流道场通
Third, a simplified mathematical model is specially developed to study the effect of flow field structure on performance of PEM fuel cell with interdigitated flow field.
提高电池阴极和阳极的增湿温度都会增加阴极的淹没程度，但是前者的影响程度较之后者要。
The main product categories: PEM standard parts: pressure riveting nut; pressure riveting nut column (SO, SOO, BSO-type insert nut; pressure rivets; pressure riveting screw; floating nut; Squeeze Nut; grounding nut column; spring screws; positioning shoring holders; positioning pin and so on.
主要产品种类：PEM标准件：压铆螺母；压铆螺母柱（SO、SOO、BSO类）；镶螺母；压铆钉；压铆螺钉；浮动螺母；挤压螺母；接地螺母柱；弹簧螺丝；定位持撑柱；定位销等。
The company possesses PEM (proton exchange polymer electrolyte membrane) electrolytic ozone generation technology, which is world-advanced electrochemic ozone production technology.
公司拥有的PEM膜（质子交换聚合物电解质膜）电解式臭氧发生技术，是目前世界先进的电化学臭氧制取技术。
Is that pem your father's?
那支钢笔是你父亲的吗？