The friction coefficient of NF-1 and Teflon coatings increase from 0.08 to 0.14 and 0.15 separately while that of PEF coating decreases from 0.1 to 0.08.是什么意思_The friction coefficient of NF-1 and Teflon coatings increase from 0.08 to 0.14 and 0.15 separately while that of PEF coating decreases from 0.1 to 0.08.在线翻译_英语_读音_用法_例句