selective calling system 中文意思是什麼
selective calling system
解釋
選擇呼叫系統-
Digital selective calling system
數字選呼系統 -
Global maritime distress and safety system - part 3 : digital selective calling equipment - operational and performance requirements, methods of testing and required testing results
海上呼救和安全裝置.第3部分:數字選擇呼叫裝置.操作和功能要求.試驗方法和規定試驗結果 -
Selective - calling system
選擇呼叫設備
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