传输频带

DUV is introduced. It permits signals to "hitch-hike" on existing microwave radio systems by using the lower end of the frequency band not normally used for voice.

DUV推出，它允许信在现有的微波无线电系统中"搭便车"，使用微波频带中的低端部分，通常不用于话音传输。

The resource of frequency band is more and more invaluableness, the demands for transmission efficiency and storage of speech grow higher and higher.

频带资源越来越宝贵，对语音的传输效率和存储容量提出了很高的要求，解决这一问题的一个主要方法就是压缩语音，以尽可能少的数据量和最低的失真度来表示语音，即进行语音压缩。

Show to list the word carrier machine and simulated carrier machine of entire quantity on transmission capacity comparison.

全数字电力线载波机在占用4kHz线路频带不变的前提下，成倍地扩展了传输容量。

In the described system, in order to transmit the narrow-band analog signals or low speed digital signals at any time and under any climatic condition, sun-blind-region ultraviolet is used as information carrier, the modulated low voltage mercury-vapor lamp is used as emission device.

所描述的系统是以日盲区紫外光作为信息载体的，用被调制的低压汞蒸汽紫外放电灯作为发射器件，以日盲型滤光片和光电倍增管或日盲型紫外光电倍增管作为接收器件，以达到在任何时间和在任何气候下完成窄频带模拟或低速数字信号的传输。

The communications mode under computer control system which composes such as large covered area、wider frequency band、longer transmission distance、bigger volume、high quality、flexibility and multi-address connections.

利用卫星通信与航天技术相结合并由计算机实现控制的通信方式，其优点是覆盖面积大、频带宽、传输距离远、容量大、质量好、机动灵活并可实现多址连通等优点。

This transmission provides a more continuous power band than a single-stage pump system.

这传输提供了更持续功率频带比单级泵系统。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。