test and operation
| group
| test and operation | |
| avia. | 试验与操作 |
| group | |
| gen. | 圈子; 小组; 把...分组 |
| gen. од. | 群体 |
| comp., MS | 群組 |
| hydroel.st. | 组 |
| hydroel.st. од. | 群 |
| math. | 组，类，群 |
| met. | 类 |
| |||
| 试验与操作 | |||
|
test and operation : 7 phrases in 4 subjects |
| Aviation | 3 |
| Electronics | 2 |
| Shipbuilding | 1 |
| Technology | 1 |