天然石墨 natural graphite: 天然石墨電極natural graphite brush: 天然石墨電刷natural graphite electrode: 天然石墨電極natural graphite in flakes: 鱗片狀天然石墨natural graphite in powder: 粉末狀天然石墨下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯