短語詞組短語frequency alias assignment subcommittee 頻率分配小組委員會frequency y assignment 頻率分配frequency alias assignment 頻率分配frequency alias assignment chart 頻率分配表international frequency assignment plan 國際頻率分配計劃up path frequency assignment 上行線路頻率分配band frequency assignment 帶內頻率分配carrier frequency assignment 載波頻率分配;載頻指配fixed frequency assignment 固定頻率分配 返回 frequency assignment