?释义浓缩牛奶综合征
地方分网---南京市分网 ... 通话距离大于2000米(The communication distance is longer than 2000 meters); 通话声音音量大、语音音质清晰、抗干扰能力强(The volume of the voice is clear enough with no noise) 安装简易、使用方便、维护简单(Installation and maintenance is simple and the very convenient for operation)。 ...