(subclass RadioSystem CommunicationSystem) | Communications.kif 231-231 | 子類 無線電系統 and 通訊系統 |
(subclass AMRadioSystem RadioSystem) | Communications.kif 236-236 | 子類 AM無線電系統 and 無線電系統 |
(subclass FMRadioSystem RadioSystem) | Communications.kif 241-241 | 子類 調頻廣播系統 and 無線電系統 |
(subclass ShortwaveRadioSystem RadioSystem) | Communications.kif 246-246 | 子類 短波無線電系統 and 無線電系統 |
(subclass BabyMonitoringSystem RadioSystem) | Communications.kif 251-251 | 子類 BabyMonitoringSystem and 無線電系統 |