| Share | Phrase |
|---|
| 19.88% | photoelectric [physical/chemical] cell |
| 15.73% | photoelectric [physical/chemical] element |
| 15.37% | photoelectric [physical/chemical] switch |
| 14.71% | photoelectric [physical/chemical] unit |
| 13.35% | photoelectric [physical/chemical] sensor |
| 12.49% | photoelectric [physical/chemical] controller |
| 8.43% | photoelectric [physical/chemical] transducer |