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fresnel-lens
| optical landing system
| Fresnel lens | |
| avia. | 菲涅耳透镜 |
| met. | 菲涅耳透镜 |
| optical landing system | |
| space | 光学着陆系统 |
| |||
| 航空母舰上菲涅耳透镜 | |||
| 菲涅耳透镜 | |||
| 菲涅尔透镜 | |||
| fresnel-lens: 11 phrases in 3 subjects |
| Aviation | 1 |
| Electronics | 3 |
| Technology | 7 |