north american numbering plan 中文意思是什麼
north american numbering plan
解釋
北美編號計劃-
The fcc instructed the north american numbering plan administration to make 311 available in order to relieve the load on the 911 emergency number
Fcc指導北美編碼方案局採用" 311 "以減輕" 911 "緊急電話號碼的負擔。
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