private telephone exchange 中文意思是什麼
private telephone exchange
解釋
專用電話交換機-
Each telephone served by a private branch exchange
由專用小交換機提供服務的電話分機。 -
Grading standard for stored program control private automatic telephone branch exchange quality
程式控制用戶自動電話交換機質量分等標準 -
Generic specification for stored program control digital private automatic branch telephone exchange system
程式控制數字用戶自動電話交換機通用技術條件 -
General specification for stored program control analogue private automatic branch telephone exchange system
程式控制模擬用戶自動電話交換機通用技術條件
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