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.
封口材质使用广泛，可以是聚乙烯、聚丙烯、聚苯乙烯、聚酯以及玻璃瓶，但不能用于金属瓶体及瓶盖。
Sealing material is widely used and can be polyethylene, polypropylene, polystyrene, polyester and glass bottles, but can not be used in metal bottles and caps.
综述了增容聚苯乙烯与聚乙烯、聚丙烯、聚酰胺共混物的研究进展。
The research development of compatibilized polystyrene blends with polyethylene, polypropylene, polyamide was reviewed.
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