| |||
| reference group (A group that is associated with another group so that their properties and the properties of the groups and fields they contain always match. If the properties of one group are changed, the other group is updated automatically) | |||
| reference group | |||
| critical group of the population; reference group of the population | |||
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groupe de reference : 8 短语, 6 学科 |
| 信息技术 | 1 |
| 卫生保健 | 1 |
| 法律 | 1 |
| 电子产品 | 1 |
| 联合国 | 3 |
| 运输 | 1 |