| Share | Phrase |
|---|
| 31.60% | alternating [time periodicity] current |
| 19.23% | alternating [time periodicity] voltage |
| 10.59% | alternating [time periodicity] system |
| 5.36% | alternating [time periodicity] signal |
| 4.41% | alternating [time periodicity] movement |
| 3.83% | alternating [time periodicity] component |
| 3.28% | alternating [time periodicity] generator |
| 2.76% | alternating [time periodicity] source |
| 2.61% | alternating [time periodicity] output |
| 2.04% | alternating [time periodicity] copolymer |
| 1.90% | alternating [time periodicity] arrangement |
| 1.83% | alternating [time periodicity] wave |
| 1.63% | alternating [time periodicity] channel |
| 1.63% | alternating [time periodicity] manner |
| 1.55% | alternating [time periodicity] pump |
| 1.55% | alternating [time periodicity] sequence |
| 1.54% | alternating [time periodicity] valve |
| 1.51% | alternating [time periodicity] period |
| 0.75% | alternating period |
| 0.30% | output alternating |