衰減開關 的英文怎麼說
中文拼音 [shuāijiǎnkāiguān]
衰減開關
英文
attenuator switch-
Optical power meter real - time monitor optical power of each optical cable, and control computer gather the value of optical power attenuation circularly, if some values excess the limit, the computer control optical switch to connect another spare optical fiber with otdr card, control the otdr card to test the optical fiber, and then find the malfunction point accurately. the system require software system to run with hardware devices tother. this paper analyze requirement and technical feasibility in software system, ooa and uml are used to analyze software and abstract the class diagram
通過光功率計對每條光纜中的備用光纖進行實時的監控，測試光功率的衰減值，主控計算機不斷循環的對每個光功率模塊進行數據採集，並記錄每路光信號的光功率衰減值，然後進行分析處理，如發現達到設定的光功率衰減門限值就報警，並控制光開關的切換，將故障光纜中的另一備用光纖與otdr卡連接，通過otdr卡對該光纖進行測試，從而確定故障點。Discharge the capacitor to a load after it has charged fully enough, and this produces an exponential decay pulse ( edp ) on the load
通過開關式穩壓電源產生高壓直流，並控制該電壓對電容器進行充放電就能輸出指數衰減陡脈沖波形。We define the recombination time of excess electrons in p field as the minority carrier lifetime. in theory, we developed the equation between excess minority carriers lifetime and the open - circuit voltage decay ; moreover, the effect of capacitance to general open - circuit voltage is also investigated. both different efficiency solar cells are measured by the method and showed the relations between the minority carrier lifetime and the performance of solar cells, which provides great useful guidelines for fabricating high - efficiency silicon solar cell in industry
根據太陽電池的工作原理，詳細地論述了用脈沖光源照射n / p結太陽電池時光電壓的產生，理論上給出了注入p區的電子復合帶來的開路電壓與少子壽命的關系，也研究了n / p結勢壘電容放電對開路電壓衰減的影響關系，推導了利用開路電壓隨時間衰減的關系來測量少數載流子壽命的理論公式。If the drums will be hit medium to hard, you ' ll usually want to enable the mic ' s built - in attenuation ( “ pad ” ) switch. this helps minimize the chance of distortion
如果鼓被越來越有力度的擊打，我們經常會希望把麥克內置的衰減開關打開，這樣會幫助減少失真的機會。The content of the thesis is classified into three parts. the first part summarizes the modern tecchnoligies for optical switches and variable optical attenuators, analyzes the pros and cons of the techniques involved
第一部分主要研究了現有光開關及可調光衰減器的實現技術，對各種技術的優點及缺點進行了分析，並對光開關及可調光衰減器技術現狀進行了概述。Integrated the monitoring data collected from the scene of blast with the correlative theory of earthquake wave, the blast vibration characteristic of this underground blast engineering and the influence that the blast vibration act on the ground buildings are analyzed. applied the method of duality linearity regression analysis, the propagation attenuational laws of blast earthquake wave in this underground engineering are gained by this software matlab. the analysis results indicat that the attenuational laws of blast earthquake wave are obvious diversity in the condition of difference distances
結合採集到的大量爆破振動現場實測數據，並應用地震波的相關理論，分析了該地下工程開挖爆破的地面爆破振動特性及爆破振動對地面建（構）築物的影響;應用二元線性回歸分析法，通過matlab軟體計算得出該地下工程開挖爆破地震波的傳播衰減規律;分析結果表明，不同距離下的地面爆破地震波的衰減規律存在明顯的差異，近距離條件下爆破地震波的垂直方向分量衰減最慢，遠距離條件下垂直方向分量衰減最快，遠距離的爆破地震波的垂直方向分量和水平徑向分量的衰減指數均要比近距離相應的爆破地震波衰減指數要大。Our metabolism slows down, causing us to put on extra weight ; our joints stiffen ; we heal more slowly ; our reflexes begin to lag
我們的新陳代謝慢下來，導致我們變胖；我們的關節變得僵硬；我們的復原速度減慢；我們的反應能力也開始衰退。This thesis mainly analyze the structure of switch the circuit ' s form and some of manufacturing technic. under the given frequency band, the switch has flat capability of insert loss and isolation, and can satisfy the need of millimeter - wave system
本課題主要對開關的結構、電路形式及製作工藝等方面進行了一定的分析，使得毫米波鰭線pin管開關在給定頻率范圍內，具有平坦的插入衰減和隔離度特性，滿足毫米波系統的需要。The relationships between extinction - ration, half - wave voltage and electrode structure have been analyzed with transfer matrix theory and effective index method. the following conclusions have been made : 1 ). the electrode width can be optimized to get the lowest half - wave voltage of boa - type optical switch
我們設計的集總電極型boa光開關理論3db調制帶寬大於2 . 5ghz ，半波電壓為5v ，消光比大於40db ，對tm模的理論衰減大於45db ，而對te模的損耗小於0 . 15db 。In view of this, the development of new - type optical switches have started, it can achieve the optical layer routing, wavelength selection, optical cross - connect functions, has great potential and broad prospects for application in the field of optical fiber communications market
它的出現為光開關、光衰減器以及濾波器等光纖通信器件的微小型化、大陣列化和低成本化提供了技術上的可能性。因此微光機電系統（ moems ）是微電子機械繫統（ mems ）的一個很有前途的應用領域。分享友人