深入研究煤低温热解过程中酚类的生成机理具有典型性和代表性，对促进煤化学研究具有重要的意义。
It is very important to promote the development on the field of coal chemistry by studing deeply on the mechanism of phenolic compounds produced during coal prolysis at lower temperature.
上市公司作为企业中的一个特殊群体，是现代企业的代表，研究上市公司的资本结构具有典型性和代表性。
Being a special group, listed corporations represents modern enterprises and the capital structure is typical and representative to study on.
本文分别选择民国时期（1920-1949年）和新时期（1978-2000年）具有典型性和代表性的教科书来探讨鲁迅作品和形象在中学语文中的展现状况。
Text selects typicality and representational textbooks of Minguo period from 1920 to 1949 and new period from 1978 to 2000 to discuss the exhibition actuality about Luxun's works and image-building.
本文分别选择民国时期（1920-1949年）和新时期（1978-2000年）具有典型性和代表性的教科书来探讨鲁迅作品和形象在中学语文中的展现状况。
Text selects typicality and representational textbooks of Minguo period from 1920 to 1949 and new period from 1978 to 2000 to discuss the exhibition actuality about Luxun's works and image-building.
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