| 单词 |
protobitumen |
| 释义 |
protobitumen protobitumen[¦prōd·ō·bə′tü·mən] (materials) Any of the fats, oils, waxes, or resins which are present as unaltered or nearly unaltered plant and animal products from which fossil bitumens are formed. |
| 随便看 |
- mar 1, 2017
- mar 1, 2018
- mar 1, 2019
- mar 1, 2020
- mar 1, 2021
- mar 1, 2022
- mar 1, 2023
- mar 17
- mar 19
- mar 2
- mar 25
- mar 7, 2023
- mar 8
- mar 8, 2011
- mar 8, 2012
- mar 8, 2013
- mar 8, 2014
- mar 8, 2015
- mar 8, 2016
- mar 8, 2017
- mar 8, 2018
- mar 8, 2019
- mar 8, 2020
- mar 8, 2021
- mar 8, 2022
|