| |||
| 环形结构 | |||
| 环状构造; 环状结构 | |||
| 环形构造 | |||
|
ring structure : 28 phrases in 9 subjects |
| Agriculture | 2 |
| Astronomy | 1 |
| Chemistry | 2 |
| Earth sciences | 1 |
| Electronics | 2 |
| Information technology | 2 |
| Plastics | 1 |
| Space | 1 |
| Technology | 16 |
| |||
| 环形结构 | |||
| 环状构造; 环状结构 | |||
| 环形构造 | |||
|
ring structure : 28 phrases in 9 subjects |
| Agriculture | 2 |
| Astronomy | 1 |
| Chemistry | 2 |
| Earth sciences | 1 |
| Electronics | 2 |
| Information technology | 2 |
| Plastics | 1 |
| Space | 1 |
| Technology | 16 |