When the draw ratio was 7, the friction coefficient and the wear rate along the draw direction was lower than that of undrawn PTFE by about 15% and 40%, respectively. 2.是什么意思_When the draw ratio was 7, the friction coefficient and the wear rate along the draw direction was lower than that of undrawn PTFE by about 15% and 40%, respectively. 2.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句