reflection-type
| cavity
| reflection type | |
| tech. | 反射式 |
| cavity | |
| geol. | 裂隙 |
| hydroel.st. | 空穴; 空洞 |
| met. | 孔穴孔洞; 内腔; 模腔 |
| space | 空腔; 空心; 空腔谐振器 |
| |||
| 反射式 | |||
|
reflection-type : 25 phrases in 7 subjects |
| Agriculture | 1 |
| Chemistry | 3 |
| Electronics | 3 |
| Metallurgy | 2 |
| Nuclear physics | 1 |
| Space | 1 |
| Technology | 14 |