求翻译：所谓具有代表性的字体，即17种字体分别为12世纪至20世纪20年代的主流字体。通过研究这17种代表性字体以及字体中所包含的形态特征是否易于辨识，是否具有美感和创造性，从而挖掘字体演变的历史原因，充分认识到字体在当时是否具有一定的时代特性或文化性，并表达一定的意义，能否在心理及主观感受中产生吸引力。是什么意思？

The so-called representative of the font, 17 kinds of font mainstream font of the 12th century to the 1920s. Through the study of the 17 kinds of representative morphological features contained in the font and font is easy to recognize the beauty and creativity, thereby mining the the font evolution

So-called representative of a font, a font that is 17 to 12th-century to 20 century mainstream 20s font. Through the study of representation of the 17 fonts, and font included in the morphological characteristics are easy to identify whether or not to have a aesthetic and creative, and to explore th

The so-called representative of the font, or 17 kinds of fonts separately for the mainstream of the 12th century font. By studying the 17 kinds of morphological characteristics of the representation contained in the font and the font is easy to identify, with beauty and creativity, font changes to m