Nevertherless, the cycling life is increased while the additives (RSO3H)and polytetrafluorethylene (PTFE)are added to the positive paste simultaneously.
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。
2
The method and adhesive process for Sodium-Naphthalene solution activating Polytetrafluorethylene (PTFE) surface were described, and the properties of adhesive were tested.
叙述了钠—萘溶液活化聚四氟乙烯表面的方法和粘接工艺，并测试了粘接件的主要性能。
3
Air enters the desiccator through an annular inlet channel, which is covered by a strip of Polytetrafluorethylene PTFE coated wire mesh to prevent the ingress of rain, dust, insects, etc.