characteristic gas特征气体characteristicn.特点；特性；特色adj.典型的；特有的characteristic features of Chinese英语的语言特点Characteristics of Poetic Language诗歌语言的特点characteristics of geologic relics地质遗迹特点Characteristics and classification特点及类型characteristics of creative talent创造力人才特点characteristic of school-running办学特色characteristic class of a manifold流形的示性类characteristics of popular culture大众文化特征characteristic of running a school办学特色characteristics of ancient meaning古义特征