Finally we obtain Euclidean geometry when we introduce the length function of a vector.To denote the posidons in the space, we make use of the frame of reference instead of the base itself.是什么意思_Finally we obtain Euclidean geometry when we introduce the length function of a vector.To denote the posidons in the space, we make use of the frame of reference instead of the base itself.在线翻译_英语_读音_用法_例句