attenuation characteristic 中文意思是什麼
attenuation characteristic
解釋
衰減特性- attenuation : n. 1. 變薄，變細。2. 減少，減弱。3. 稀釋。4. 【物理學】衰減。
- characteristic : adj 有特性的；表示…特性的，…特有的。 Japan s characteristic art 日本特有的藝術。n 特性，特徵，性...
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Pp38 was found to have immunosuppressive effect on chicken in vivo and the copy number of 132 - bpr was found to be associated with the attenuation of the virus in vitro, meq was believed to be a potential oncogene, based on its leucine zipper structure and proline - rich domain characteristic of jun / fos family of transcription factors, and may plays an important role in the pathogenicity or oncogenicity of mdv
其中， meq與132 - bpr兩個基因是mdv - 1所特有，已證實132 - bpr的拷貝數與毒株的體外致弱程度有關， pp38則被證實可抑制機體的免疫應答。 meq基因由於具有與致瘤基因jun fos家族類似的分子結構，因此，我們有理由認為meq基因在mdv致病、致瘤中可能發揮重要的作用。 -
Two kinds of filters are presented : by transferring the conventional waveguide cavity filter to the siw, a narrow bandstop filter is designed and simulated, get characteristic of narrow - band bandstop filtering. for example, relative bandwidth 1. 2 %, most attenuation of 48db in band. electromagnetic bandgap ( ebg ) structures present “ forbidden band ” characteristics, siw features high - pass characteristics, so bandpass filters can be composed by combing ebg and siw
本論文提出了兩種基片集成波導濾波器結構:將傳統的腔體濾波器概念運用於基片集成波導結構，設計出了一種窄帶帶阻濾波器，對其進行模擬，得到了窄帶帶阻濾波特性，如相對帶寬為1 . 2 % ，最大衰減為48db 。 -
Attenuation frequency characteristic
衰減頻率特性 -
It also considers the human physiological characteristic, seasonal attenuation of human cerebra, and to make the user profile update along the time
考慮到人類大腦周期性衰減的生理特點，使用戶特徵文件隨時間動態更新。 -
It point out the resolving methods of the high frequency communication characteristic and its attenuation of the distribution network are the new research field
指出電網的高頻通信特性及其抗干擾、抗衰耗對策是獨立於高性能載波晶元的研究領域。 -
This paper is based on the theory of environmental science, systematology and noise control engineering. noise control system and comprehensive harness of fan room have been researched. by the investigate, and measure of fan room noise. sound production principle, acoustics characteristic and the law of attenuation propagation have been analyzed. thus, the sound field model of fan roo has been put for put forward ward
本文以環境科學、系統科學和噪聲控制學為理論基礎，對風機房噪聲控制系統及其綜合治理進行研究，通過對風機房噪聲污染調查監測，分析其發生機理、聲學特性和傳播過程衰減規律。 -
Study on infrared attenuation characteristic of expanded graphite worm
利用膨脹石墨處理焦化廢水的研究 -
Based on the resolving algorithm of continuous - layer method, the time order analyzing curves, acceleration curves and the response spectra of transfer function at the different points of the ground and at the same point on the different ground conditions are gained. it demonstrates that the responses of ground in x, y and z axial directions all change by time, and the obvious wave propagation appears in ground. for different observing points on the same ground condition, at more distant points from the load line, the less swings are found, that is to say, vibration possesses the obvious characteristic of attenuation
基於分層法的解析演算法，得到了在不同點以及在同一點但不同地質條件下的時程分析曲線、加速度變化曲線和傳遞函數反應譜，結果表明，地基土在x 、 y 、 z三個方向的響應都是隨時間變化的，並且伴隨有明顯的波動現象產生；對于相同地質條件的不同觀察點，距離荷載作用線越遠的地方振幅越小，即振動具有明顯的衰減性。 -
Attenuation characteristic of fast wave, slow wave, quasi - transverse wave and anti - plane transverse wave are discussed and the combined effects of the anisotropy of the solid skeleton and fluid viscosity on the propagation characteristic of plane waves are analyzed numerically. the influence of horizontal anisotropy and fluid viscosity on the propagation characteristic of elastic waves is clarified
討論了液飽和多孔介質中快波、慢波，準剪切波和反平面剪切波的衰減特性，並分析了固體骨架異性以及流體粘度的綜合效應對平面波傳播特性的作用，澄清了介質水平面內異性以及流體粘度對彈性波傳播特性的影響。 -
Test methods for communication cable - test for frequency characteristic of attenuation coefficient of coaxial pair - comparison method
通信電纜試驗方法同軸對衰減常數頻率特性試驗比較法 -
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。 -
Rolling bearing ’ s vibration signal has a strong background yawp, the different fault cause the different characteristic of vibration. particularly the scathing fault, will not only cause the low frequency impact vibration, but also rise the high frequency inherence attenuation vibration of the bearing
滾動軸承振動信號具有背景噪聲強、不同故障引起不同特徵振動的特點。尤其是損傷類故障，不但會引起低頻沖擊振動，還會激起軸承系統的高頻固有衰減振動。 -
Firstly, by the analysis ir radiation characteristic of target on environmental background, and the attenuation characteristic of ir radiation through atmosphere, the calculation formula of ir radiation of target is discussed. the design ideas and implementation method to generate dynamic ir images with computer are addressed in this paper
首先，分析了目標的紅外特性，以及環境對目標的紅外輻射的影響，目標輻射在大氣中的衰減，給出了相應的計算公式，本文論述了動態紅外成像的設計思路和實現方法。 -
In this paper, firstly, three - dimensional geometrical models of the target and ir flares are established and by using the software vega missile attacking process is real - time simulated visually. secondly, the ir radiation characteristic of the target, background and the ir flares are analyzed, in which the wave radiation of the sun at different time, wind speed, the relative humidity and ir radiation attenuation characteristic of the atmosphere is under consideration. from above the ir image of the target, ir flare and the background are got and then are normalized to gray color image that will be showed in a child window in real time
本文通過三維建模工具creator建立目標、背景和干擾的三維模型，再通過視景模擬軟體vega生成載機、導彈和目標飛機的可見光場景圖像，實時地對導彈攻擊工程進行可視化模擬；並分析了目標、背景和干擾的紅外輻射特性，計算出傳感器路徑上大氣衰減等等，將經過衰減的目標、背景和干擾的輻射強度量化為灰度圖，以子窗口形式實時顯示；進一步可以使目標和干擾按照各自的運動軌跡運動，便可產生動態的紅外熱圖像序列。 -
The structural characteristic of rc bridge is that the resisting force is deteriorating in life service of bridge, but most of reliability researches do n ' t consider the attenuation of resisting force until recent
既有混凝土橋梁結構的特點是抗力隨時間不斷衰減，但目前大多數的可靠度研究都沒有涉及到抗力衰減。 -
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。 -
In this thesis, modeling of the characteristic of the ir jamming is discussed. the attenuation characteristic of ir radiation through atmosphere is analyzed and the atmospheric permeance of ir radiation is given. the design ideas and implementation method to generate dynamic ir images with computer are addressed
在論文中，討論了干擾彈的建模，分析了紅外輻射在大氣中的衰減，總結出大氣透射比的工程計算方法，論述了本文動態生成紅外圖像的設計思路和實現方法。 -
The characteristic of channel is the basic of plc research, including the transmission lines, channel noise, and attenuation. the ability of anti - jamming, speed and distance of transmission are decided by the mode of modulation. for example, the fsk, bpsk, cdma and ofdm are main modulations in the plc
通道的研究是根本，電力線通信其他研究內容都是建立在通道研究的基礎上，內容主要包括傳輸線特性、通道噪聲和通道衰減等;調制解調技術決定了電力線通信的傳輸速率、傳輸距離和抗干擾能力，它是電力線通信實現的關鍵，目前電力線通信中主要的調制方式有fsk 、 bpsk 、 cdma 、 ofdm等。 -
During designing hardware circuit, we have used the supreme limitation to raise driving - ability and raise the distance of measurement to returning ware by taking some measurements just like multi - polar enlarging, according to the ultrasonic characteristic of index attenuation when it ' s spreading because we need to measure longer distance ( from several meters to dozens of meters )
在硬體電路的設計中，由於需要測的距離較長（幾米到十幾米） ，針對超聲波振幅在傳播時呈指數衰減的特性，最大限度地提高驅動能力，對回波進行多級放大，達到了設計要求。
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