| Share | Phrase |
|---|
| 23.18% | ultraviolet [physical/chemical] radiation |
| 22.66% | ultraviolet [physical/chemical] region |
| 17.06% | ultraviolet [physical/chemical] source |
| 16.74% | ultraviolet [physical/chemical] light |
| 7.70% | ultraviolet [physical/chemical] ray |
| 4.98% | ultraviolet [physical/chemical] coating |
| 4.02% | ultraviolet [physical/chemical] wave |
| 3.63% | ultraviolet [physical/chemical] range |