With the rapid development of the semiconductor technology, large of the vacuum electronic device has replaced by the semiconductor element from the middle period of the last century. however, the vacuum electronic device owns tremendous prepotency in the exceed - high frequency and wide frequency band and high power field, especially in the exceed - high power field. the complexion won ’ t be changed for a long period
自上世紀中後期開始，隨著半導體技術的飛速發展，許多真空電子器件逐步被半導體器件取代，但是，在超高
頻、
寬頻帶、大功率，尤其是超大功率領域，真空電子器件在技術和經濟方面至今仍擁有巨大的優勢，而且在今後相當長的時期內，這種局面也不會改變。
From the middle - later period of the last century, with the rapid development of the semiconductor technology, large of the vacuum electronic device was replaced by the semiconductor element. however, the vacuum electronic device owns tremendous prepotency in the exceed - high frequency and high power field. this complexion won ’ t be changed for a long period
自上世紀中後期開始，隨著半導體技術的飛速發展，許多真空電子器件逐步被其取代，但是，在超高
頻、
寬頻帶、大功率，尤其是超大功率領域，真空電子器件在技術和經濟方面至今仍擁有巨大的優勢，而且在今後相當長的時期內，這種局面也不會改變。
Both fine and coarse center frequency controls, combined with a scanwidth selector provide simple frequency domain measurements from 100 khz div
中心
頻率控制有微調和粗調，掃
頻寬度選擇從
Accurate simulation of switch circuit is needed in pin switch design, while limited by assembling techniques, serial resonance and channel inter - coupling exist in the common joint that bring a lot of difficulties for simulation. 2 - dementions simulation software can not establish accurate circuit mode for pin diode switch which gives simulation error, and it costs much more time with 3 - dementation simulation software, which is not applicable in practice for pin switch design
Pin開關的設計中需要對開關電路進行準確模擬，然而高
頻、
寬帶、多擲pin開關受裝配工藝的限制，開關公共結點附近存在著串聯諧振和相互耦合，給pin開關的準確模擬帶來了困難:二維模擬軟體很難對電路進行準確建模，模擬誤差較大;三維模擬軟體耗時過長，難以在實際設計中應用。
The darker the screen will have better color - contrast. b turn on the display and check the sharpness of the text on the four corner. the sharper the text means the higher color - contrast, focal length and higher frequency
B開機后，仔細查看顯示器四角的文字是否夠清晰，尤其是在高解析度底下，如果高解析度情況下，而顯示器四角的文字清楚，表示該顯示器對比及焦距不錯且
頻寬夠
寬。
Please do not hotlink, as that eats up bandwidth
請不要直接連接到圖畫本身?因為那樣很耗
頻寬。
In july 2004, the telecommunications authority announced that the type ii interconnection policy for local fixed - line telecommunications services would be withdrawn by june 2008 to promote investment and consumer choice in high bandwidth customer access networks in telecommunications
2004年7月，電訊管理局宣布，將於2008年6月撤銷本地固網電訊服務的第二類互連規管措施，以促進在電訊市場高
頻寬客戶接達網路的投資，讓消費者有更多選擇。
In order to meet the requirement of phase - error and physical dimension, high - pass / low - pass filter phase shifter and solid - structure are applied in the design of if broad - band five - bit digital phase shifter
考慮對相位誤差和物理尺寸的要求，中
頻寬帶五位數字移相器採用高通/低通濾波器形式和立體結構進行設計。
At last, the testing experiments are done to check out the testing system. the result of the experiments indicates that the measuring accuracy grade is b to the gjb3370 - 98 standard. and the non - repeatability errors of the amplitude wide and the phase wide are both less than 10 %
分析結果表明:測試系統達到gjb3370 - 98的測量精度b級要求;動態性能測試中幅
頻寬和相
頻寬的測量不重復性誤差小於10 % ，滿足測試系統提出的要求。
We design the qmf based on the criteria of minimum frequency bandwidth and the qmf that possess linear phase, and give a example of a signal decomposed and restructured. 4. in the research of channel dropping filters, we use 5 rank butterworth filter to approach the digital filter. we design lc unpower netwok and rc power network. we manufacture lc lowpass and highpass filter ， and test their performance ; we simulate the appliance of the channel dropping filters in the system
4 .在
頻帶分割濾波器的設計方法中，用5階巴特沃斯濾波器逼近最小
頻寬正交鏡像濾波器，對無源和有源濾波器進行了模擬設計；設計並製作了無源lc低通和高通濾波器，測試了它們的性能；並對分割濾波器在系統中的應用進行了計算機模擬。
Proposed by the european broadcasting union, eureka 147 is widely applied in europe, canada and part of asia. the technology operates in the new l - band or vhf band iii. its 1. 5 mhz bandwidth can accommodate a maximum of about 1. 2 mbps of data
Eureka147是現時歐洲廣播聯會（ europeanbroadcastingunion ）推廣的制式，被歐洲、加拿大和部份亞洲地區所採用，它的設計是需要另外在新的Ｌ
頻帶或甚高
頻帶vhfbandiii操作，
頻寬1
Cyberport s internal private network provides " bandwidth freeway " for all it applications at cyberport. with a transmission rate from 1 gbps external up to 10 gbps within campus, your demand in high - speed communications can be fully satisfied
數碼港內部專用網路，是數碼港內所有信息科技應用系統的
頻寬高速公路，可支持1吉比特（對外通訊）至高達10吉比特（內部連系）的傳送速度，滿足租戶對高速網路通訊的需求，讓租戶實時掌握速度的優勢。
Cyberport s internal private network ( ipn ) provides " bandwidth freeway " for all it applications at cyberport. with a transmission rate from 1 gbps ( external ) up to 10 gbps ( within campus ), your demand in high - speed communications can be fully satisfied
數碼港內部專用網路，是數碼港內所有信息科技應用系統的
頻寬高速公路，可支持1吉比特（對外通訊）至高達10吉比特（內部連系）的傳送速度，滿足租戶對高速網路通訊的需求，讓租戶實時掌握速度的優勢。
Because the noise that affects radio signals is partly, but not completely, manifested in amplitude variations, wideband fm receivers are inherently less sensitive to noise
因為影響到無線電信號的噪音只是部分的，而不是整體出現于波幅變化中，調
頻寬頻的接收器自身對噪音不夠敏感。
Also, low bandwidth wireless bearers is not suitable for delivering bulky html pages
此外，流動通訊器材的
頻寬狹窄，並不適合傳送龐大的以超文本標示語言編寫的網頁。
Engineers would have to find a way to exert precise control on the interactions of particles in a plasma hotter than the sun ' s core, and much of the communications bandwidth would be taken up in controlling the computer and dealing with errors
工程師必須找到在比太陽核心還熱的電漿中，精確控制粒子交互作用的方法，而且大部份的通訊
頻寬將被用來控制電腦以及處理誤差。
The increasing of the width of the groove makes the phase velocity decreased largely but almost no effects on the bandwidth, and the coupling impedance enhanced
槽口
寬增大相速減小較多，
頻寬幾乎沒有什麼變化，耦合阻抗增大。
With the radius of the center conductor increasing, the phase velocity is also decreased a lot, the bandwidth is relatively widened, and the dispersion of the structure is weakened but the coupling impedance is lowered
軸半徑增大，相速明顯減小，
頻寬有一定程度的增加，色散減弱，耦合阻抗值降低。
The low - frequency discrete noise of the propeller is induced by the interaction between blades of the propeller and wake of the marine, and the low - frequency broadband noise of the propeller is produced by the interaction of blades and turbulent field of the marine stern
螺旋槳的低頻離散譜噪聲是由船尾伴流場和葉片的相互作用引起的，而低頻寬帶噪聲是由船尾粘性湍流場和葉片的相互作用產生的。
