noise section 中文意思是什麼
noise section
解釋
噪聲記錄剖面-
Through the processing method basing on wavelets, implementing the removing noise about section gauss noise to colure full tv signal, we resolve the theory and practice problems in the processing of weak signal detection
摘要通過基於小波分析的處理方法，實現對彩色全電視信號一段被高斯白噪聲干擾的降噪，解決微弱信號檢測過程中遇到的理論和實踐問題。 -
Fluid noise mainly comes from out put pulsation of rate of flow, the main reason of out put pulsation of rate of flow is the instant high pressure return flow that obturation cubage produced when the big round curve pressure transition. the v trough on the port plate can reduce the fluid noise. in this paper, the author based on the acting of dam a river and condensability of liquid and used matlab language as tool to calculate the v trough on the original port plate and drew out the p - t diagrammatic curve and analyzed its shortcoming and improved the design of original v trough and got that the best size of its angle was 12. 3 and its length was 5mm and the cross section was an equilateral triangle
流體噪聲主要來源於輸出流量脈動，造成輸出流量脈動的主要原因是閉死容積在大圓弧段壓力切換時產生的瞬時高壓迴流，在配流盤上開設v型尖槽可降低因高壓迴流而引起的流體噪聲，本文以截流作用和液體的可壓縮性為理論依據，以matlab語言為工具，對原配流盤上的v型尖槽進行了理論計算，繪制出p - t圖線，分析了它的不足，並對原有v型尖槽進行了優化設計，得出了v型尖槽的最佳幾何尺寸：配流盤平面上的v型尖槽的兩邊的夾角為12 . 3 ，槽長5mm ，槽的橫截面為等邊三角形。 -
Major projects under planning include the traffic improvements to tuen mun road town centre section, reconstruction and improvement to tuen mun road, widening of the tolo highway fanling highway between island house interchange and fanling, the central - wanchai bypass and the island eastern corridor link, improvement to island eastern corridor between causeway bay and north point, central kowloon route, widening of gascoigne road flyover, route 4 between kennedy town and aberdeen and retrofitting of noise barriers on 8 existing road sections. hk - zhuhai - macao bridge hk project management office
而籌劃中的項目有屯門公路市中心段交通改善工程屯門公路重建及改善工程舊政務司官邸附近道路交匯處與粉嶺之間的吐露港公路粉嶺公路擴闊工程中環及灣仔繞道和東區走廊連接路銅鑼灣至北角的東區走廊改善工程中九干線加士居道行車天橋擴闊工程四號干線堅尼地城至香港仔及加建隔音屏障工程於八條現有道路。 -
Then we introduce the character of the atmosphere channel, which we emphasized on the atmosphere scatter, absorption and scintillation ' s effect on the laser beam. in chapter, we explain why we used cassegrain telescope to collect the optical signal at first, then the lightsource, detector, front amplifier used in optical communication has been compared to that of fiber communication, the noise including shot noise, thermal noise and background light noise has been explained here for analysis the snr and ber in the next section
在第三章介紹無線光接入系統的光收發單元，採用多孔徑卡塞格倫式的收發天線對消除減小大氣湍流影響有較大作用，針對大氣通道的特點無線光系統收發單元在光源、光探測器、前置放大電路上存在許多有別于光纖通信的技術，同時還闡述了光接收機包括背景噪聲的噪聲機制和接收靈敏度、誤碼率等指標，最後給出了一個整個傳送鏈路的功率預算。 -
Despite the evd is just to come out the noise of shouting is rather high, but have the news to call, and be give or get an electric shock, created widely by top, new section, long, summer is new, ten thousand benefits reach, at every step high, first section, greatest disc the machine business enterprise is in the evd that the 2003 constitute november alliance, among them another 7 business enterprise, in droves change the ensign to change flags, or hurl direction other camp, or cut the input, evd property the alliance is tottering
盡管evd剛出來時呼聲頗高，但是有消息稱，由上廣電創維新科長虹夏新萬利達步步高先科廈華9大碟機企業於2003年11月組成的evd聯盟，其中另7家企業，紛紛改旗易幟，或投向其他陣營，或縮減投入， evd產業聯盟搖搖欲墜。 -
2. virtual technology in this section, firstly, introduce virtual instrument development and analyze the main principles in tractor testing projects ( including shaft mass, left - and - right side trigging forces, smoke density, noise and velocity ). secondly, propose a general design combined multifunction data acquisition devices ( daq ) with lab view diagram language
（ 2 ）虛擬儀器技術介紹了虛擬儀器的發展特點，分析了拖拉機主要的檢測項目（軸重、左右制動力、煙度、噪聲、速度）的檢測原理和手段，提出一套基於多功能數據採集卡daq和圖形化編程語言labview的虛擬儀器構建方案。 -
The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided
論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。 -
" a section of the highway with noise barrier.
附設隔聲屏障的一段公路 -
Fans for general purposes - methods of noise testing - airborne noise emitted by small air - moving devices - section 6 : airborne noise emitted by small air - moving devices
普通用途風扇.噪聲試驗方法.小型空氣推動裝置發出的空氣噪聲 -
The traffic noise of a new traffic source - combined overhead road was measuered, and the noise distribution under varied road conditions and different surroundings was compared, anlyzed and discussed. the noise model of overhead road, which with special section such as slope was put forwarded, based on the basic overhead noise model by considering the effects of the special section on the total noise level and distribution
比較分析了不同路況下及周圍環境下的噪聲分佈情況，在水平段高架復合道路噪聲的豎直分佈模型的基礎上，考慮上下坡段對兩側建築物噪聲分佈的影響，建立了特殊路況下高架復合道路噪聲的豎直分佈模型，預測值與實測值基本符合。 -
In this way, when obturation cubage leave absorb oil cavity it connects the eduction oil cavity with the v trough and with the increasing of the turning angle, the size of the cross section of v trough become bigger and bigger, which make the pressure between the cavity of two blades much higher and higher, and until it completely connects the eduction oil cavity, it reaches the pressure of the eduction, and it can effectively reduces the fluid noise caused by high pressure return flow
這樣，當密閉容積離開吸油窗口之後，通過v型尖槽逐漸與排油窗口連通，隨著轉角的增加， v型尖槽通流截面積逐漸增大，這就使兩葉片間容腔內的壓力逐漸升高，直至完全接通排油窗口時，才升壓達到壓油腔的壓力，這樣可以有效地降低因高壓迴流而引起的流體噪聲。 -
To this paper we were carried tentatively on spectrum whitening in prestack, and each section after division scale is processed with spectrum whitening, particularly the composition of high frequency is raised apparently, the signal - noise ratio of high frequency raise. the resolution of whole section is better than stack
本文還嘗試性地在疊前進行譜白化處理，對分尺度后的各個記錄分別進行譜白化，尤其是高頻成分提高得很明顯，有效地提高了高頻信噪比，整個剖面的解析度明顯增強。 -
Doing the further research on the division frequency stack on the foundation of study of predecessor, at first the residual moveout correction is done to the seismic record, make the phase axle regularity, doing foundation for the same phase stack ; then carried on division scale processing by wavelet transform ; spectrum whitening is done to each scale, the high and low frequency band need to do prolongs, the middle frequency bands only increase the value of the frequency spectrum ; several kinds of methods that estimate the value of signal - noise ratio has been studied further, and summarize their advantage and disadvantage as well as the scope of application ; the seismic record after spectrum whitening is stacked by weighting with the value of the signal - noise ratio ; then estimate the value of signal - noise ratio which is each scale section after stacking, the scale that the signal - noise ratio is big is assigned big weighting, otherwise, the scale that signal - noise ratio value is small is assigned small weight ing, and carried on weighted reconstruct to each scale section
本文在前人研究的基礎上，在分頻疊加方面做了進一步的研究。首先對地震記錄進行剩餘時差校正，校齊同相軸，為同相疊加做好基礎工作；然後對地震記錄用小波變換的方法進行分尺度處理；對各個尺度分別做譜白化，對于高、低頻段需要做頻帶延拓，中間頻段僅提升頻譜值；對于幾種信噪比定量估計的方法進行了深入的研究，並且總結了它們的優缺點以及適用范圍；對譜白化后的地震記錄用信噪比估計值作為加權系數進行加權疊加；對于各尺度的疊加剖面也進行信噪比估計，對于信噪比大的尺度給予大的加權系數，反之，信噪比值小的尺度給予小的加權系數，對各尺度疊加剖面進行加權重構。 -
This article had the soundproofing harrier to in neijiang - kunming line weining section the land sector noise to carry on actual and carries on the analysis comparison to along the route other road sections noises in, obtained the neijiang - kunming line weining section railroad noise to the grass sea nature protection area wild animal ' s influence conclusion
對內昆線威寧段有隔聲屏障的地段的噪聲進行實測並對沿線其餘路段的噪聲進行分析比較，得出內昆線威寧段鐵路噪聲對草海自然保護區野生動物的影響結論。 -
To reduce the noise generated from delivery vehicles, a noise barrier wall 700m long and 3m high has been erected along the section of po wan road near the residential area. in addition, noise barrier walls of 2 - 4m high are erected along the slaughter house s perimeter
為減低運肉車經過時所發出的噪音，在其中一段比較接近民居的寶運路設有約七百米長、三米高的隔音屏障，並於屠房周圍築起高兩至四米的隔音墻。 -
The special purpose is for inspecting the position and noise of meshing section of quadrature taper pair, according to the inspecting result, this machine will guide milling gear machine to make a adjustment and begin to cut teeth again, finally, to satisfy the mesh request of taper gear pair
本機床專用於檢查正交錐齒輪副的嚙合傳動噪聲，並可根據檢查的結果，指導銑齒機的調整和重新切齒，最終達到錐齒輪副的嚙合要求。 -
Industrial - process control valves. part 8 : noise considerations. section 1 : laboratory measurement of noise generated by aerodynamic flow through control valves
工業過程式控制制閥第8部分:噪聲的考慮第1節:實驗室內測量空氣動力流流徑控制閥產生的噪聲 -
Having features of concentrated lubrication, neat cutting section and small curvilinear cutting, low noise, stable running, easy operation, and high efficiency, automatic knife grinding, powerful motor, this machine is and ideal cutting tool for garment industry
本機具有集中潤滑，切口平直，且能作小曲率半徑曲線裁剪，低噪音，運轉平穩，操作簡便，高效率，自動磨刀，採用大功率電動機等特點，是服裝行業最理想的裁剪工具。 -
Abstract selecting certain section of north - south elevated road in shanghai to develop and set up several curved and erect, turnable noisae - preventing screens, and making comparative noise level test and then conducting analysis and approach on sound environment werw presented in this article
摘要在上海市區南北高架與地面道路建設期間，選擇了一些典型的高架路段，開發和設置了弧型與面立型兩種可翻轉式防噪聲屏，並作了對比噪聲測試，進行了聲環境的分析、探討。 -
Methods of measurement for radio equipment used in satellite earth stations ; part 2 : measurements for sub - systems ; section three : low - noise amplifier
衛星地面站用無線電設備的測量方法.第2部分:分系統的測量.第3節:低噪聲放大器
分享友人