reserve battery 中文意思是什麼
reserve battery
解釋
備用電池-
Telecommunications - interface between carriers and customer installations - analog voicegrade enhanced 911 switched access using network - provided reserve - battery signaling ; supplement
電信.載體和用戶裝置之間的介面.用網路提供的蓄電池信令發送進行模擬聲音級增強的911轉換存取.補充件
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