查询词典 ultra-low frequency

Computer simulations reveal that among the 20:1 ultra-wide frequency range VSWR is small, antenna pattern doesn't split and the lognitudinal length is less than half of the traditional small angle LPDA.

计算机模拟结果表明：该天线在20：1的超宽频带内驻波比小、方向图不分裂，纵向长度比传统方法设计的LPDA缩短一半以上。

The digital control of ultra-audio-frequency serial resonant induction heating power supply is mainly researched in this paper.

本论文的研究内容主要是串联谐振式超音频感应加热电源的数字化控制技术。

The ultra high frequency RFID technology of this system is more advanced than other technologies from the aspect of operation and veracity.

此系统所采用的超高频RFID技术，从操作上和准确性上来讲，都较其它技术大为提高。

A quadrature down-conversion mixer based on this topology is designed and optimized for an ultra high frequency RFID reader.

设计并优化了一个基于共用跨导级结构的用于超高频RFID阅读器的正交下变频混频器。

In VHF/UHF(Very High Frequency/Ultra High Frequency),the standard microstrip antennas of half-wave length are still very big .

在较低频段，传统的半波长微带天线尺寸仍然太大。

Very High Frequency/ Ultra High Frequency communication is good at mobility and flexibility, and it also appears with features of moderate transmitting power, reasonable equipment cost, very sound anti-destroying ability and great security.

短波/超短波通信不仅具有很好的机动性和灵活性，而且其发射功率小，设备简单，抗毁性强。

Around the frequency band setting and standardization problem for RFID, argument has been continuing, and government can't make conclusion, Until April 20th 2007, Information Industry Ministry can't voice the trial band In ultra high frequency.

摘 要：围绕着对RFID的UHF频段的开放和标准的制定问题，国内争执不休，政府主管部门长期久议不决，直到2007年4月20日，信息产业部才发布了频段评断试用的通知书。

High Frequency and Ultra-high Frequency Financial Data is a brand new research area in financial econometrics.

金融高频数据和超高频数据的研究是金融计量学的一个全新的研究领域，研究的基本动因在于，一是对金融高频数据和超高频数据本身所具有的特征的关注，二是对理解金融市场的微观结构来说相当重要。

The lack of a common standard for tags and readers to begin with, and the later battle between various high frequency and ultra-high frequency products meant you could not be sure the data on a tag could be read all along the supply chain.

标签和读取装置缺乏一个通用标准来作为最初的设计基础，随后的各种高频和超高频产品之间的竞争则意味着制造商不能肯定制造的标签中的信息可以在供给链中的每个环节都可以读出。

The results show that the high frequency resonant phenomena provide an effective means for detecting the partial discharge in GIS with the ultra-high frequency method.

结果表明，高频电磁波在GIS母线中的谐振现象为超高频法检测GIS中局部放电提供了有利条件，同时，可利用电磁波的传播时间对局放源进行准确定位。

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。