filtering material
| sampling
| filtering material | |
| oil | 过滤材料 |
| tech. | 渗漏材料 |
| sampling | |
| econ. | 示范 |
| hydroel.st. | 采样 |
| hydroel.st. од. | 取样; 抽样 |
| IMF. | 抽样法 |
| tech. | 样本化; 进样; 取土样 |
| textile | 签封样品; 提供样品 |
| |||
| 过滤材料 | |||
| 渗漏材料 | |||
| 滤料 | |||
|
filtering material : 9 phrases in 4 subjects |
| Electronics | 3 |
| Public security | 1 |
| Technology | 2 |
| Water resources | 3 |