" Test method for the complex permittivity of solid dielectric materials at microwave frequencies --"" Open cavity"" method"

"GB/T7265.2-1987固体电介质微波复介电常数的测试方法""开式腔""法"

(2)Ceramic composite materials with dielectric constant less than 6 at frequencies from 100 Hz to 10,000 MHz;

(二)在 100 赫兹至 10000 赫兹的频率下,介电常数小于 6 的陶瓷复合材料

Low frequencies (50-60 cycles per second)are used for domestic and commercial power, but frequencies of around 100 million cycles per second (100 megahertz)are used in television and of several thousand megahertz in radar and microwave communication.

50和60赫的低频交流电用于家庭和商业,100兆赫左右的交流电用于电视,几千兆赫的交流电用于雷达和微波通信。

confined waves have definite frequencies

被限制的波具有确定的频率。

Electromagnetic radiation of lower frequency (hence longer wavelength)than visible light or infrared radiation, and consisting of the range of frequencies used for…

比可见光或红外辐射频率低(因此波长较长)的电磁辐射,包含的频率范围用于

Bandwidth: The difference (in hertz)between the upper and lower limits of wave frequencies transmitted over a communications channel.

波段阔度:在一个通信通道中,最高和最低波频率(单位是赫兹)的差别。

The periodic variation in amplitude of a wave produced by the superposition of two waves of different frequencies .

波震动由两种不同频率的波叠加在一起而产生的波在某一区域内的周期振动

The frequencies of blood groups vary among different racial groups and in different geographic areas. Certain diseases are rarer in persons with particular blood groups.

不同族群和不同地理区之间的常见血型各不相同。特殊血型的族群中罹患某些疾病的情况则较为罕见。

Ultrasonics deals with ultrasonic waves, which have frequencies above the audible range, and their applications in industry and medicine

超音波声学研究包括超音波之振动(频率高于可听得见的范围)以及工业和医学方面的应用

bandwidth:The numerical difference between the upper and lower frequencies of a band of electromagnetic radiation, especially an assigned range of radio frequencies.

带宽:电磁辐射频带中高频与低频之间的数值差,尤指某设定的无线电频率范围。

The thermal damping is maximum for frequencies corresponding to pulsations that are somewhere between isothermal and adiabatic

当脉动处于等温和绝热之间某个状态时,相应频率下的热阻尼是最大的。

The tool is made to vibrate a few hundredths of a millimeter at ultrasonic frequencies ranging from 19kHz to 25kHz.

刀具以19,000Hz至25,000Hz的超声频率作百分之几毫米的振动。

Road vehicles-Calibration of electromagnetic field strength measuring devices-Part 1: Devices for measurement of electromagnetic fields at frequencies 0 Hz

道路车辆.电磁场强度测量设备的校正.第1部分:频率大于0Hz的电磁场测量设备

A loudspeaker designed to reproduce bass frequencies .

低频扬声器设计用来再现低音频率的扬声器

Connectors for frequencies below 3 MHz-Part 9 : circular connectors for radio and associated sound equipment.

低于3MHz的射频连接器.第9部分:无线电及相关音响设备用的圆形连接器

Article 88 The competent civil aviation authority under the State Council shall exercise control over civil aviation radio stations and the special frequencies assigned to be used by civil aviation system according to law.

第八十八条 国务院民用航空主管部门应当依法对民用航空无线电台和分配给民用航空系统使用的专用频率实施管理。

Typically they move in geosynchronous orbits about 22,300 mi (35,900 km)above the earth and operate at frequencies near 4 gigahertz (GHz)for downlinking and 6 GHz for uplinking.

典型的通讯卫星位于地球同步轨道,约在地球上方35,900公里处,操作频率向地传输4吉赫(GHz),向上传输为6吉赫。

A range of electromagnetic frequencies that pass unobstructed through a planetary atmosphere.

电波反射装置电磁波段能够不受阻碍地穿过行星大气层的一种电磁频率范围

Methods of measurement of magnetic properties of magnetic steel sheet and strip at medium frequencies

电工钢片(带)中频磁性能测量方法

Methods of measurement on receivers for television broadcast transmissions. Part 1 : general considerations. Measurements at radio and video frequencies .

电视广播传输接收器的测量方法.第1部分:一般要求.视频和音频的测量

Methods of measurement on receivers for television broadcast transmissions Part 1: General considerations electrical measurements at radio and video frequencies and measurements on displays

电视广播接收机测量方法第1部分:一般考虑射频和视频电性能测量以及显示性能的测量

In electronics, a device for producing waveforms of various shapes, frequencies and amplitudes

电子技术中的一种设备,用于产生各种形状、频率和振幅的波形。

Where harmful interference has been caused to civil aviation special radio frequencies , the unit or individual concerned shall rapidly remove such interference;

对民用航空无线电专用频率造成有害干扰的,有关单位或者个人应当迅速排除干扰;

station transmitting standard frequencies

发送标准频率的电台

The high frequencies are attenuated

高频成分被削减。

The resistivity of a mineralized rock having the electrochemical barrier differs, according to the frequency of the applied current, the resistivity decreasing in the higher frequencies .

根据所传送电流的频率不同,具有电化学降的矿化岩石的电阻率会产生差异,高的频率会导致电阻率降低。

resonant frequencies are related to the shape and size dimensions of the element

共振频率与这种元件的形状和大小有关。

Test method for complex permittivity of solid dielectric materials at microwave frequencies

固体电介质微波复介电常数的测试方法

Methods of test for electric strength of solid insulating materials at power frequencies

固体绝缘材料工频电气强度的试验方法

paired frequencies

成对频率

optical frequencies

光频段

band of frequencies

频率带

tracking frequencies

跟踪频率

Standard frequencies

标准频率

staggered frequencies

参差频率

Lightwave Frequencies

光波频率

more than frequencies

较大次数

non paired frequencies

非成对频率

channelized frequencies

复用频率

allocation of frequencies

频率分配

dispersion of frequencies

频率色散

mark and space frequencies

传号和空号频率

nominal cut-off frequencies

额定截频

separation of two frequencies

两频率间的间隔

sum of fundamental frequencies

合频

beating of optical frequencies

光学频率的拍频

Standard Broadcast Frequencies

标准广播频率

infrared receiving frequencies

红外接收频率

cumulative relapse frequencies

累积复发率