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n.磁卡电话
1、With the utility model, once someone calls stealthily on the lines of cardphones or IC card telephones of post and telegraph offices, operators on duty in a measurement room can immediately know.───使用该报警器，一旦有人在邮电局的磁卡电话或IC卡电话线上盗打电话，测量室值班人员立即能获知。