numeric index
| of the
| vector group
| numeric index | |
| tech. | 数标 |
| of the | |
| gen. | 大城市的流浪儿 |
| vector group | |
| agric. | 矢量群 |
| space | 矢量 群 |
| |||
| 数标 | |||
|
numeric index : 3 phrases in 1 subject |
| Technology | 3 |