Because of the limitation of bandwidth, signal must be transmitted in low speed.
由于受传输带宽的限制，要求信号以较低的速率传输。
The conclusion is that the time delay in AO system is the limitation of Bandwidth, and an AO control system should have higher Effective Bandwidth and lower Close Bandwidth.
分析结果认为自适应光学控制系统应当具有较高的有效带宽，较低的闭环带宽，系统中的时间延迟是限制自适应光学控制系统有效带宽的主要因素。
However, due to the limitation of the bandwidth of wireless networks and the capability of mobile devices, multimedia service has not been widely used for mobile devices.
但由于无线网络带宽的限制以及移动终端设备本身的性能限制，移动终端上的多媒体业务还不能大面积推广普及。
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