聚四氟乙烯和四氟乙烯和硅酮绝缘体在60摄氏度以下可用。
Teflon, tefzel and silicone insulations are usable below 60 Celsius.
现已存在聚四氟乙烯制成的人造血管，但它们很容易感染和形成血栓，且往往只能起几个月的作用。
Synthetic vessels made of Teflon exist, but they are prone to infection and blockage by blood clots, and tend to work for only a few months.
一旦组装完成，通过液压起重机将位于聚四氟乙烯轴承上的拱形建筑缓缓地移动一星期时间大概300米的距离来封闭住石棺。
Once complete, hydraulic jacks will then slide the arch approximately 300 meters on Teflon bearings during the course of a week to enclose the sarcophagus.
这靠一种化学结构类似于聚四氟乙烯的氟化高聚物实现。
This is done with a fluoropolymer-a chemical similar in structure to Teflon.
非要使用PTFE(聚四氟乙烯)-内衬的平底锅时，将炉子燃烧器开到中等或更低程度。
If you must use a PTFE-lined pan, keep your stove's burner on medium or lower.
支撑用的绝缘体应当用电阻非常高的材料，如聚四氟乙烯或陶瓷来制作。
The support insulators should be made of materials with very high resistance, such as Teflon. or ceramic.
警告：用于阀体法兰上的隔膜的密封面在工厂受到特殊的处理，以强化聚四氟乙烯隔膜的密封性能。
Caution: the sealing surface for the diaphragm on the top flange of the valve body receives special factory preparation to enhance sealing with PTFE diaphragms.
其最大的难点是化学沉铜前的聚四氟乙烯活化前处理，也是最为关键的一步。
The biggest difficulty is chemical deposition of copper of PTFE activation pretreatment, is also the most crucial step.
为了保证低泄漏电流和低介电吸收，反馈电容器应当由合适的介电材料(如聚苯乙烯、聚丙烯或聚四氟乙烯)制成。
To ensure low leakage current and low dielectric absorption, the feed back capacitor should be made of a suitable dielectric material such as poly styrene, polypropylene, or Teflon.
将桥面的巨大节段在滚轴或滑行聚四氟乙烯支撑板上推过桥墩。
Large sections of bridge deck are pushed out over the piers on rollers or sliding teflon bearings.
这些阀门具有一个偏心安装的磁盘和聚四氟乙烯或316不锈钢密封环。
These valves feature an eccentrically mounted disk and a PTFE or 316 stainless steel seal ring.
若向正极铅膏中同时加入RSO3H和聚四氟乙烯（PTFE），则正极的循环寿命可以相对延长。
Nevertherless, the cycling life is increased while the additives (RSO3H)and polytetrafluorethylene (PTFE)are added to the positive paste simultaneously.
其冲击强度是聚氯乙烯的20倍，尼龙66的10倍，聚四氟乙烯的8倍。
Its impact strength is 20 times that of polyvinyl chloride, nylon 10, 66 times, 8 times of ptfe.
这种空压机气缸中基本上不含油，其活塞环和填料一般为聚四氟乙烯。
This kind of air compressor cylinder basically does not include any oil content in, the piston ring and packing is commonly ptfe.
因此，一个聚四氟乙烯隔膜不能用作配置三元乙丙橡胶阀内件的阀门的更换件。
Therefore, a PTFE diaphragm cannot be used as a replacement in an EPDM trimmed valve.
轴承：自润滑，密封在雨刮，黄蜂聚四氟乙烯涂层可建成。
Bearings: Self lubricating, built in wiper seals, Frelon teflon coated available.
因此，目前对于聚四氟乙烯表面的活化处理，大多采用等离子体处理法进行，操作方便，还明显减少了废水处理。
Therefore, the activation of the surface modification of polytetrafluoroethylene, mostly by plasma processing method, convenient operation, significantly reduce the wastewater treatment.
但是，一个三元乙丙橡胶隔膜可以用作配置聚四氟乙烯阀内件的阀门的更换件。
But an EPDM diaphragm may be used as a replacement in a PTFE trimmed valve.
分别采用聚氨酯抛光垫、聚四氟乙烯抛光垫、无纺布抛光垫抛光钽酸锂晶片，研究抛光垫材料性能对抛光效果影响。
To study the influence of pad material on polishing effect in polishing, polytetrafluoroethylene pad, non-woven fabric pad and polyurethane pad are selected.
塑料制品，有很好的耐腐蚀性能，使用也较普遍。品种有聚乙烯、聚丙烯、软聚氯乙烯、聚四氟乙烯、尼龙66、尼龙1010等。
Plastic products, have a good corrosion resistance, the more common use. Varieties are polyethylene, polypropylene, soft PVC, PTFE, nylon 66, nylon, etc. 1010.
内衬聚四氟乙烯管配件传统上主要采用缠绕法成型。
Traditionally, the steel pipe fittings with PTFE lining are mainly manufactured with the lap winding technique.
非要使用PTFE(聚四氟乙烯)内衬的平底锅时，应保证炉头处于中等或更低温度。另外，绝对不要预热空无一物的平底锅。
If you must use a PTFE-lined pan, keep your stove's burner on medium or lower. Also, never preheat an empty pan.
采用热重分析法，研究了聚四氟乙烯在氮气气氛下的热裂解特性。
The pyrolysis characteristics of polytetrafluoroethylene were studied in the atmosphere of nitrogen by thermogravimetric analysis.
采用热重分析法，研究了聚四氟乙烯（PTFE）在氮气气氛下的热裂解特性。
The pyrolysis characteristics of polytetrafluoroethylene(PTFE) were studied in the atmosphere of nitrogen by thermogravimetric analysis.
阀座材料应该是下列材料之一：乙烯-丙烯-二烯系单体或氟橡胶，在顶部和底部配置聚四氟乙烯轴承支撑。
The seat material shall be one of the following materials: ethylene-propylene-diene monomer or fluoroelastomer with polytetrafluoroethylene bearing support at the top and bottom.
介绍了聚四氟乙烯分散液的概念和有关性能。
Concept of PTFE dispersion and its performance are introduced.
它绝缘与热和化工抗性清楚的聚四氟乙烯材料。
It is insulated with thermo and chemical resistant clear Teflon material.
它绝缘与热和化工抗性清楚的聚四氟乙烯材料。
It is insulated with thermo and chemical resistant clear Teflon material.
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