 |
| |||
| specific sample survey | |||
| model survey; typical survey | |||
| cross-section survey; model study; typical investigation | |||
| 典型 调查: 5 phrases in 5 subjects |
| Animal husbandry | 1 |
| Business | 1 |
| Ecology | 1 |
| Technology | 1 |
| Textile industry | 1 |
|
| |||
| specific sample survey | |||
| model survey; typical survey | |||
| cross-section survey; model study; typical investigation | |||
| 典型 调查: 5 phrases in 5 subjects |
| Animal husbandry | 1 |
| Business | 1 |
| Ecology | 1 |
| Technology | 1 |
| Textile industry | 1 |