数学图形表象教学缺乏实证研究支持；
There is no sufficient practical research to support math graphic representation teaching;
论述了第二空间是现代招贴画设计的灵魂，是图形表象之上的内象，是现代招贴画传播的主旨。
It elaborated the second space was the soul of modern poster design, was the image under the graphical appearance and was the subject of modern poster spread.
本文指出，图形识别实质上是图形空间中的表象变换（坐标系变换）。
In this article, it has been pointed out that the pattern recognition is the representation transformation in pattern space.
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