乙烯

Objective: To evaluate the effects of expanded polytetrafluoroethylene barrier membrane in guided periodontal tissue regeneration .

目的：观察国产膨体聚四氟乙烯膜运用于引导牙周组织再生技术的临床效果。

The pyrolysis characteristics of polytetrafluoroethylene were studied in the atmosphere of nitrogen by thermogravimetric analysis.

采用热重分析法，研究了聚四氟乙烯在氮气气氛下的热裂解特性。

Polytetrafluoroethylene materials and products, rubber and related products.

聚四氟乙烯材料及制品，橡胶及制品。

OBJECTIVE: To explore the possibility of repair of the extensive bile duct injuries with expanded polytetrafluoroethylene.

目的 探讨膨体聚四氟乙烯修复胆管缺损的可能性。

Mechanism of swelling oil-leakage of transformer s seal ring s made by butadieneacrylonitrile rubber and polytetrafluoroethylene is presented in this paper.

首次对以丁腈橡胶和聚四氟乙烯为材料的变压器密封圈的溶胀机理进行了研究并获得重要成果。

Polytetrafluoroethylene is an ideal self-lubricating material which has very low friction coefficient, high thermal stability and chemical stability.

聚四氟乙烯以极低的摩擦系数、优异的热稳定性和耐腐蚀性著称，是一种理想的自润滑材料。

It is an important method to modify polytetrafluoroethylene by compositing PTFE with inorganic particles.

聚四氟乙烯／无机粒子的复合是改进PTFE性能或实现功能化的重要方法。

Polytetrafluoroethylene fluoroplastics are an important species, at PTFE in the CF bond can be particularly high stability.

聚四氟乙烯是氟塑料中的一个重要品种，在PTFE中C-F键键能高特别稳定。

The invention relates to polytetrafluoroethylene composite film filtering materials for air filtering industry.

本发明涉及空气过滤行业用聚四氟乙烯复合膜的过滤材料。

This paper introduces the wet-granulated polytetrafluoroethylene resin about the application field,technology of preparation,character and market information.

叙述了聚四氟乙烯湿法造粒料的应用范围、制造方法、性能特征以及前景展望。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。