| |||
| 抽样框架; 抽样架构 | |||
| 抽样架 | |||
| 抽样结构 | |||
| ★ 抽样框 | |||
| 抽样范围; 抽样基础 | |||
| 取样基数 | |||
|
sampling frame : 3 phrases in 3 subjects |
| Earth sciences | 1 |
| Technology | 1 |
| Water resources | 1 |
| |||
| 抽样框架; 抽样架构 | |||
| 抽样架 | |||
| 抽样结构 | |||
| ★ 抽样框 | |||
| 抽样范围; 抽样基础 | |||
| 取样基数 | |||
|
sampling frame : 3 phrases in 3 subjects |
| Earth sciences | 1 |
| Technology | 1 |
| Water resources | 1 |