In this article, the relative position between two planes, the perpendicular relation between two geometric elements and the angle between two planes in E~4--Space of Euclidian geometry are briefly analysed and discussed.是什么意思_In this article, the relative position between two planes, the perpendicular relation between two geometric elements and the angle between two planes in E~4--Space of Euclidian geometry are briefly analysed and discussed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句