To completely replace radio, the cost of owning the device and accompanying bandwidth contract must be in reach of the average consumer.
如果要彻底的代替广播，拥有终端的价钱以及能拿下频带宽度合同的价格需要能让平均顾客可以负担。
In order to improve average responding time, reduce the usage of network bandwidth and improve data availability, mobile clients usually cache part of the data locally.
移动客户机为了提高平均响应速度、减少对网络带宽的争用和提高数据的可用性，通常在移动客户机本地缓存部分数据。
Improving measurement accuracy of low level signal is studied using RF attenuation, resolution bandwidth, video bandwidth, and video average.
研究了利用频谱仪射频衰减、分辨带宽、视频带宽和视频平均的方法，提高和改善低电平信号的测量精度。
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