 |
| |||
| composition of population; demographic composition; demographical composition | |||
| population composition | |||
| population structure | |||
| 人口构成: 14 短语, 5 学科 |
| 农业 | 1 |
| 技术 | 9 |
| 生命科学 | 1 |
| 生态 | 1 |
| 经济 | 2 |
|
| |||
| composition of population; demographic composition; demographical composition | |||
| population composition | |||
| population structure | |||
| 人口构成: 14 短语, 5 学科 |
| 农业 | 1 |
| 技术 | 9 |
| 生命科学 | 1 |
| 生态 | 1 |
| 经济 | 2 |