查询词典 bandwidth

Quality factor ; cavity resonator ; microwave measurement ; bandwidth of half power

品质因数；谐振腔；微波测量；半功率带宽

The Japanese government provided the company a slice of the cellular-phone bandwidth in the Tokyo-Nagoya region.

接着便在关东地区走廊区域分给Motorola一部分的频宽。

Using the above polynomial gain ripple characteristic, expressions for the gain and bandwidth are derived, and numerical simulations are performed.

利用光子晶体光纤高非线性和低色散斜率的优良特性，提出了一种利用变换和缩放的四阶切比雪夫多项式计算双抽运光纤参量放大器平坦增益和带宽的方法。

After a routine check we found that the network is unable to offer sufficient bandwidth to accommodate the anticipated data transfer rate.

常规检查后我们发现，该网络无法提供足够的带宽以满足预计数据传输速率。

Made by Axis Communications of Chelmsford, Massachusetts, the camera can be configured to provide various frame rates and resolutions to ensure flexibility in image quality and bandwidth use.

摄像机可配置不同的帧频和分辨率，确保图片质量和宽带使用的灵活性。

But the huge video data and limited network bandwidth are always choke point.

但是，视频数据量大和网络带宽有限一直是限制着视频监控网络化的瓶颈。

With the rapid development of broadband wireless network technology, the problem of bandwidth is not any longer the choke point.

摘要随着宽带无线网络技术的飞速发展，在宽带无线网络中的带宽问题已经不再成为瓶颈，从而促使宽带无线网络上的各种业务向着实时的趋势发展。

The basic video bandwidth required to transmit luminance and chrominance signals is 4/2 MHz for the NTSC standard.

NTSC标准中亮度信号和色度信号传输所要求的基本视频带宽是4.2MHz。

Later, it makes some comparison with four kinds of modulation technique, and finally, it implements the three-level PWM switching power amplifier with the PWM technique. The power of the amplifier is 2kVA, and the frequency bandwidth is 10～3kHz. In the thesis, the author designs and makes the hardwares of the switching power amplifier. The hardwares contain power inverter rank circuit, control system circuit based on DSP, drive and isolation circuit, and protective circuit. The thesis also analyses the potential safety problems and put forward some solutions for the problems. Furthermore, the thesis accomplishes the software design of the control system, and successfully debugs it. The methods of designing higher power ampilfier are also discussed in the thesis. It analyses the feasibility of the methods, outlines the way of how to design higher power switching power amplifier, and does some experiments with the method of switches-parallelling.

根据电动振动试验系统对开关功放的要求，提出了以电感电流瞬时值控制技术为基础的三电平脉宽调制开关功放的设计方案，并通过系统仿真进行了原理性论证；然后设计并制作了开关功放的硬件，包括功率转换电路，基于DSP的控制电路，驱动、隔离电路以及保护电路；针对开关功放数学模型不易得出的特点，细致分析了模糊自适应PID控制方法，在此基础上编写了控制程序；研制出一台功率为2kVA，通频带为10～3kHz的三电平脉宽调制开关功放；论文中还探讨了实现大功率开关功放的方法，分析了各种方法的可行性，给出了实现大功率开关功放的思路，并进行了并联开关管实现大功率开关功放的实验。

On the basis of mode conversion theory, this paper further optimized a better dimension and obtained the regulation about the radius of the circular waveguides, curvature and frequency of bent circular waveguides and the bandwidth.

在模式耦合理论的基础上，优化出了比较好的几何结构，并发现了圆波导半径、弯曲圆波导曲率和频率以及频带宽度之间的变化规律。

That snake Alaric named Archbishop...

庇护。。。那个毒如蛇蝎的Alaric被命名为大教主。。。

You have done lots of magical things to be amazed at.

你做了很多神奇的事物感到惊讶。