衰減電壓 的英文怎麼說
中文拼音 [shuāijiǎndiànyā]
衰減電壓
英文
evanescent voltage-
The pzt ferroelectric films " fatigue characteristics were studied, and here the electrical load was produced by rt6000s ; it was known that with the voltage increasing or frequency reducing, the degree of ferroelectric fatigue decay would increase
然後用rt6000s測試儀加載電載荷，總結得出pzt薄膜的鐵電疲勞規律，即加載電壓增加或加載頻率降低時，鐵電極化衰減程度變大。3. the new microwave power supply ( mps ) can work in vacuum and its power measurement is convenient. the output power could be adjusted with the change of control voltage, and the reflecting power could be gotten by measuring the output voltage of attenuator and detector
（ 3 ）可在真空下穩定工作的新型微波源功率的測量較為方便，通過改變控制電壓的大小可以調節輸出功率，通過測量衰減檢波器的輸出電壓信號可實現反射功率的測量。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。The second chapter is about model experiment study, it introduces purpose, scheme, equipment and experiment contents having copperplate and copper ball as object by comparability rule experimenting plenty of physical models, deals with experiment data and makes second field attenuation voltage curves first field isoline both single aperture and mutli - aperture in different situation. in the end, it obtains best depth of multi - aperture source
利用相似性準則進行大量的物理模擬實驗，實驗觀測中以銅板和銅球作為目標體，詳細介紹了模擬實驗研究的目的、方案、使用設備以及實驗內容，並對實驗數據進行了處理分析，作出了不同模擬條件下單、多孔徑的二次場衰減電壓曲線和一次場等值線圖，找出多孔徑作發射源的探測最佳深度。Test method for bulk acoustic wave attenuation of piezoelectric lithium niobate crystals
壓電鈮酸鋰單晶體聲波衰減測試方法This testing system is based on the pxi bus virtual testing system. there are many secondary types of equipments in the system. such as the programmable power supply, high voltage probe, high voltage relay, high voltage load and pneumatics
本文以pxi總線虛擬測試系統為核心，輔以程式控制電壓源、高壓衰減探頭、高壓繼電器、高壓放電負載及氣動裝置，分別設計組裝了主機櫃與測試櫃，完成整個自動測試進程。The variation of db magnitude attenuation and phase delay of reflection is uniformly proportional to distance along the line toward the direction of reflection, where the phase delay is 360 degree per wave length, the db attenuation per meter is twice the one way db attenuation per meter of forward or backward wave
沿傳輸線之反射，即反向傳播與正向傳播電壓沿傳輸線之相量比，其相位落後及分貝衰減沿反射方向之變化則正比于線長，相位落後為每半波長三百六十度，每米之分貝衰減為正向波或反向波單程每米之分貝衰減之兩倍。It was first discovered that open - circuit voltage decay in multicrystalline silicon solar cells is smaller than that of in monocrystalline silicon solar cells through electron irradiation, which is explained from electron irradiation mechanism and the structure of multicrystalline silicon solar cells and also has not been reported
通過對晶體硅太陽電池電子輻照，首次發現多晶硅太陽電池的開路電壓衰減小於單晶硅太陽電池，從輻照機理和多晶硅太陽電池的結構解釋了該現象。本研究未見報道。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。The compensator was h ( s ) = 2370s. the results of simulation showed that attenuation factor of the first order of the third control system was as much as ten times of the value of the system without controller
通過模擬表明，採用速率傳感器，在前三塊帆板上布置壓電驅動器時，一階最大衰減因子為無控時的10倍，可以使脈沖衰減時間縮短15倍。The investigation of the measure principles of direct current attenuation method, voltage integral method, and direct load method
較為深入的研究了直流衰減法、電壓積分法和直接負載法的測試原理。A system scheme of digital image collection plus spread spectrum communication ( abbreviated as ssc ) is presented in this paper after a full analysis of noise characteristics, attenuating characteristics and impedance characteristics of low - voltage power lines
本文首先介紹了低壓電力線的噪聲特性、衰減特性和阻抗特性，然後提出一種數字圖像採集+擴頻傳輸的系統總體方案。This paper mainly discusses the design principles and chief techniques of a digital accessing system for power - line communication net ( plcn ). the technology of low bit rate speech compression high - speed modem based on plcn adaptive equalization to the channel anti - jamming and anti - fading are applied in this system. so speech tele - control data and tele - protection signals can be transmitted high quality in the band - limited channel
該系統綜合應用了低比特率語音信號壓縮編碼技術、基於電力通信網的高速調制解調技術、信號傳輸的通道自適應均衡技術和抗干擾、抗衰減技術，可在帶限通道中高質量的傳輸語音、遠動數據和遠方保護等信號，具有較高的整體性能。Seek the b ( t ) fieldwork curve and the time derivative curve dbz ( t ) / dt from the voltage decrease data generalized from field current that eliminating noise treated by wavelet ; 3
由經過小波消噪處理過的野外歸一化的電壓衰減數據求出b _ z （ t ）實測曲線和它的時間導數曲線（According to the research of the medium - voltage power line transmission characteristics and frequency - domain modeling of bottom up mode that is to accquire characteristic parameters by theoretical calculation, the characteristic modeling of medium - voltage power line is established, and the suitable parameters which can restrain the signal attenuation is gained
本文首先通過對中壓電力線傳輸特性的研究，利用從下往上的頻域研究模式，即通過理論計算獲得特徵參數，建立了中壓電力線傳輸通道特性模型，推出了符合中壓電力線傳輸函數變化的參數，可以有效地抑制信號衰減。Such problems as the attenuation of dc elements and sine waveform, voltage sag and frequency deviation should be taken into account in order to analyze the transient process in the power system
要分析電網的暫態特性，還必須考慮衰減直流分量和衰減正弦波，以及電壓缺口和頻率偏移等問題。Safety of power transformers, power supply units and similar - particular requirements for perturbation attenuation transformers - part 2 - 19 : particular requirement mains - born perturbatiion attenuation transformers
電源變壓器供電設備及類似設備的安全性.擾動衰減變壓器的特殊要求System scheme of speech coding plus spread spectrum communication was presented based on a full analysis of noise characteristic, attenuation characteristic and impedance characteristic of low - voltage power line. spread spectrum carrier ( abbreviated as ssc ) technology is adopted to overcome problems existing in signal transmission over power line. high quality, low rate mbe compression algorithm was used to complete speech encoding and decoding
在對低壓電力線路的噪聲特性、衰減特性和阻抗特性三個方面充分分析的基礎上，本文提出一種語音編碼+擴頻傳輸的系統總體方案，採用擴頻載波（ spreadspectrumcarrier ，縮寫為ssc ）技術克服電力線傳輸信號存在的問題，採用語音合成質量高並具有較低碼率的mbe壓縮演算法完成語音信號的編解碼。2. one voltage controlling manner is presented. this manner combines amplification and attenuation, and fine control and coarse control can be operated separately, it can adjust the amplitude by 1mv step in the range of 50mv to 10vpp conveniently
2 .提出一種放大與衰減相結合，精細控制和粗略控制分別進行的電壓控制方式，可以方便地實現信號幅度在50mv ? 10vpp之間以1mv的步進改變。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 。分享友人