The friction surfaces of Chinese large grain and fine grain graphite are analyzed under a Scanning Electron Microscope to investigate the friction mechanism of graphite in high temperature helium.是什么意思_The friction surfaces of Chinese large grain and fine grain graphite are analyzed under a Scanning Electron Microscope to investigate the friction mechanism of graphite in high temperature helium.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句