1.The second significant characteristic of the ozonolysis reactions concerns the origin of the biradical species. 臭氧分解反应的第二个重要特征与二元基物质有关。 来自辞典例句
2.Certain assemblages of species are characteristic of specific geologic time periods. 某些集会是特有的具体时间周期。 来自互联网 |
