查询词典 polytetrafluoroethylene

Methods: Polytetrafluoroethylene and polypropylene film electrets were prepared by constant voltage corona charging at room temperatures. The charge-store stability of PTFE and PP were studied by measuring isothermal surface potential decay after different dose of ultraviolet radiation.

用常温恒压电晕充电系统将聚四氟乙烯和聚丙烯两种材料极化制备成驻极体；用补偿法测量不同剂量的紫外照射后驻极体的表面电势。

Polytetrafluoroethylene bonded carbon-based oxygen electrode are widely used in many important electrochemical technologies, such as fuel cells, matal/air batteries, organic electrosynthetic processes and electrochemical devices for decontamination of wastewaters.

聚四氟乙烯粘结的碳基氧电极广泛地应用在燃料电池、金属/空气电池、有机电合成及电化学废。。。

Experimental materials: American NPG alloy,β-tricalcium phosphate, calcium phosphate cement, poly-lactic-co-glycolic acid and polytetrafluoroethylene.

实验材料：美国NPG黄合金块、β-磷酸三钙、固化的磷酸钙骨水泥、聚丙交酯乙交酯及聚四氟乙烯。

Objective To observe and probe the causes and shape changes of crows-feet lines, and try to apply expanded Polytetrafluoroethylene soft tissue patch onto the surface of orbicularis oculi muscle for a long-term satisfactory effect of rejuvenation of crows-feet lines.

目的 为提高鱼尾纹的除皱效果，延长有效时间，从理论与实际观察探讨鱼尾纹的形成原因及形态改变，采用相应的手术术式矫正。

Keywords polyoxymethylene;polytetrafluoroethylene;kaolin;friction and wear

聚甲醛；聚四氟乙烯；高岭土；摩擦磨损

The molding and application properties of two kinds of highly lubricating polyoxymethylene materials, which were filled with polytetrafluoroethylene, Silicone oil and with PTFE, Pumbum powder, were studied systematically and overall in the article.

本论文较系统、全面地研究了POM／PTFE／硅油和POM／PTFE／铅粉两种高润滑POM材料的加工和使用性能，考察了POM、PTFE、硅油、铅粉等品种及用量对共混或复合材料流变特性和热稳定性、摩擦磨耗特性和力学性能的影响，探讨了这两种高润滑POM材料的润滑减磨机理。

The chemical and physical characteristics and applications of polytetrafluoroethylene fiber are introduced.

介绍了聚四氟乙烯的化学、物理等特性及其应用。

Polytetrafluoroethylene this is Peng body English name.

Polytetrafluoroethylene 这是膨体的英文名字。

Through the analysis of the main influencing factors-the bore diameter and thickness of the polytetrafluoroethylene sifter on the blueprint quality and the service life, and the main technological parameters of the polytetrafluoroethylene sifter were determined in the comparison experiment on the different high rapid blueprint machines.

通过对影响晒图质量和使用寿命的主要因素——聚田氟乙烯筛板的孔径及厚度的分析研究，并利用不同型号的高速晒图机对所研制的聚四氟乙烯筛板进行对比试验，确定了聚四氟乙烯筛板的主要工艺参数。

BACKGROUND: The chief domestic alloplastic material implantation used in augmentation rhinoplasty is silicone rubber. Other materials used are porous highdensity polyethylene and expanded polytetrafluoroethylene (e-PTFE, Gore-Tex).

背景：加高型鼻整形手术中使用的人工合成异体填充物在国内主要以矽胶为主，其它还有膨体聚四氟乙烯(expanded polytetrafluoroethylene， e-PTFE， Gore-Tex)和多孔高密度聚乙烯(porous high-density polyethylene， PHDPE)等。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。