对于大多数特种气体，推荐使用CTFE，而不是PTFE，这是因为CTFE对氧气和水蒸汽的渗透性更差，冷变形也较小。
For most specialty gases, CTFE is recommended over PTFE because it is less permeable to oxygen and moisture, and evidences less cold flow.
对于大多数特种气体，推荐使用CTFE，而不是PTFE，这是因为CTFE对氧气和水蒸汽的渗透性更差，冷变形也较小。
For most specialty gases, CTFE is recommended over PTFE because it is less permeable to oxygen and moisture, and evidences less cold flow.
应用推荐