select spectrum 中文意思是什麼
select spectrum
解釋
選擇譜-
In chapter one, we make a review of particle acceleration theory and the use in solar corona. in chapter two, first we get the spectrum of synchrotron radiation then obtain the electron energy spectrum. in last chapter, we select the typical solar active region parameter to compare our result to the observation and discuss the acceleration mechanism
本文第一章對粒子加速理論以及目前各種加速理論在太陽日冕中的應用作了介紹；第二章通過理論計算得到同步加速輻射譜以及電子能譜；第三章選取太陽日冕中典型參數，對同步加速輻射加速日冕快電子作了簡單討論。 -
This paper describes a new method to select these parameters, including to determine the focus length, relative aperture and field of view of new optical system in design by means of making reference to previous star sensors and their optical systems ; to forecast the acquiring probobility of star sensor in accordance with selected param eters ; to determine the principal design wavelength and spectral coverage by means of integrat ing the spectrum of stars
本文介紹一種確定光學系統參數的新方法，包括通過參考比較已有星敏感器及其光學系統特性來選取新光學系統焦距、相對孔徑和視場；根據所選取的參數預計星敏感器的捕獲概率；採用綜合恆星光譜方法確定光學系統中心波長和光譜范圍。 -
Secondly, based on the improved algorithmic of computing the multi - fractals spectrum of seismic records, aiming at the given seismic data, we extract some character parameters of multi - fractals. following that, we select the useful parameters. finally, we fulfill the successful forecast of single geodesic and the whole area of upside layer of aotaoxi in some oil field based on oil attributes of the wells we have known, using the method of grey pattern identification, and get good comments from some experts of the same vocation
論文首先介紹了一般分形和多重分形的基本理論和演算法：其次，用作者提出的一種求地震記錄多重分形譜的改進演算法，對給定的地震道數據進行多重分形特徵參數的提取；接著優選出油氣識別用的多重分形特徵參數；最後，根據已知井位的油氣屬性，用灰色模式識別方法實現了某油fr奧陶繫上部儲層單測線及區域油氣產出前景的成功預測，得到了同行專家的好評。 -
4. spectrum database has been built for reasearch areas, resample the spectrum of different object in spectrum database according to the centric wavelength of the select bands
建立了研究地區內典型地物的地物光譜庫，並分別地物按所選波段的中心波長進行了光譜重采樣。 -
The optimal length of crystal was achieved for the characteristics of quasi - three - level. three types of crystal were compared, we select lbo as the main frequency doubler. meanwhile, the other strong spectrum were restrained by suitable coating
從激光晶體的準三能級特性出發，充分考慮增益與損耗之間的矛盾，選擇出最佳晶體長度；對三種倍頻晶體進行了比較，選擇出lbo作為主要倍頻晶體；對膜系進行了必要的分析，在維持946nm譜線振蕩的同時，充分考慮了其它激光譜線的抑制。 -
This paper selects representative samples wuliangsu lake, yellow river, dongjuyan lake and ejina salina, after information is analyzed, using optimal band index oif index, spectrum characteristics curve and application scope of each band to select optimal bands. the result shows that band 3, 4, 5 are best ones and etm453 combination is the best after r, g, b composed. all this fit for western inner mongolia
根據西部區主要濕地類型本文選取烏梁素海、黃河、東居延海、額濟納鹽沼典型樣地，通過多光譜信息的統計分析，採用波段選取最佳指數oif指數並結合地物光譜特徵曲線、各波段主要用途進行最佳波段的選取，結果一致表明3 、 4 、 5波段是各典型濕地的最佳波段，可作為反映內蒙古西部濕地信息的最佳波段。 -
Then, introducing something about spread spectrum technique. and deciding to select direct - sequence spread spectrum ( ds ) in underwater acoustic communications by comparing ds to fh according to the properties of underwater acoustic channels. after that, discussing something about rake receiver, simulating the path - search algorithms, synchronization circuits and rake receiver in low speed underwater acoustic communications and analyzing some major factors influencing the performance of systems
然後介紹了rake接收技術的基本原理，並對rake接收系統中的路徑搜索和同步系統進行了討論和模擬分析，另外還對rake接收技術在低速水聲通信系統中的應用作了模擬分析，並討論了一些影響rake接收系統性能的主要因素。 -
In this disseration the author researched the testing of gsm mobile telephone of the wireless instrument test and carried out it. the work that i shoud do is acquire the testing content 、 standard and method of test of the gsm mobile telephone, then write the driver program of the cmu200. first acquaint the communication system of gsm ; second introuced and analysized the technology of the software and hardware of control the programmable instrument, which include ieee 488 ( gpib ) standard bus 、 scpi ( standard commands for programmable ) and visa ( virtual instrument system architecture ) ; third reaserach the technology of software, it employs visual c + + 6. 0 as application development platform because of its powerful function, universality and programming and employs com module because of its characteristic 、 superiority ; the last ascertain the testing item and its standard 、 mehtod through searching the principle of gsm mobile and its testing criterion and select the programble instrment for testing according to the mobile telephone demands, which include cmu200 ( universal radio communication tester ) 、 e4445a ( spectrum analyzer ) 、 e4438c ( signal generator ), all of this build the platform of testing. i realize the automatic testing of gsm mobile telephone by using com module and visa 、 scpi
論文中首先了解了gsm通信系統及其關鍵技術;再者研究分析了可編程儀器控制的軟硬體技術，包括ieee488 （ gpib ）標準總線、 scpi （ standardcommandsforprogrammableinstruments可編程儀器標準命令）和visa （ virtualinstrumentsystemarchitecture虛擬儀器軟體架構）為對可編程儀器進行驅動編程打下基礎;第三步研究了軟體實現技術，對組件的優勢和com的特點進行了分析確定採用com組件技術來完成驅動模塊;最後根據移動臺測試要求選擇可編程測量儀器cmu200綜測儀、 e4445a頻譜儀、 e4438c信號源和一臺測量控制計算機搭建起了測試平臺，研讀可編程儀器cmu200綜測儀的scpi命令和visa （虛擬儀器軟體架構） ，根據gsm移動臺測試方法在vc開發平臺下採用com組件形式完成對cmu200的驅動編程從而實現對gsm移動臺的自動測試。 -
Some typical luminance and chrominance measurement instruments will be mentioned in this chapter, too. chapter three will focus on the global structure of this system and analyze the select of detector and processor. also, the difference between relatively spectrum response of the cmos image sensor - ov7620 and cie standard observer relatively spectrum response will be given in this chapter
第三章闡述了本系統的總體結構，對本系統的cmos圖像傳感器和核心處理器? ?數字信號處理器（ dsp ）的選擇做了詳細的分析，並且給出了本系統所使用的傳感器? ? ov7620的光譜相對響應曲線與cie標準觀察者三刺激值曲線的差異。 -
It is important to select artificial lighting that provides both ends of the spectrum in sufficient intensity
因此，選擇合適的、能同時提供足量強度紅藍光的照明燈非常重要。 -
Working together with our customers, we select the most technically suitable and economically feasible lining systems from our broad spectrum of materials and system solutions
我們和用戶一起工作，從我們眾多的材料和系統解決方案中選出技術上最合適、經濟上最合理的鑲襯系統。
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