But wireless data transfer is very much slower and less reliable than fixed broadband; it is more a complement than a competitor.
但是，与固定宽带相比，无线数据传输速度较慢，稳定性也更差，更多只能作为前者的一个补充，而非有效竞争选择。
Wireless firms point out, rightly, that their bandwidth is less abundant than the fixed-line sort and especially vulnerable to data hogs who use too much capacity.
无线运营商指出，他们的带宽远比固定网络少的多，且极易受长期占据大流量的数据影响。
Bluetooth Technology is a kind of open specification for wireless data and voice. It bases on low cost short -range radio link, and it can build a wireless link for fixed and mobile device.
蓝牙技术是一种无线数据与语音通信的开放性规范，它以低成本的近距离无线连接为基础，为固定与移动设备通信环境建立一种无线连接。
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