Increasing the Nafion content in the catalyst layer improves proton migration, however, it reduces void space, thus worsening gaseous oxygen transport.是什么意思_Increasing the Nafion content in the catalyst layer improves proton migration, however, it reduces void space, thus worsening gaseous oxygen transport.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句