最大通道 的英文怎麼說
中文拼音 [zuìdàtōngdào]
最大通道
英文
maximum channel-
And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results
接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。By coincidence or other wise, the largest channel is exposed in the beaver divide escarpment.
由於巧合或其他原因，最大通道在比佛迪維特陡壁區出露的位置。“ we have looked to gain performance by increasing the peak revs, and improving areas like cylinder filling and combustion, ” explained denis chevrier, renault ' s head of trackside engine operations. “ in qualifying trim, we expect a gain of several tenths of a second and the final dyno tests before the grand prix will allow us to determine exactly how much additional performance is available during the race
「我們看上去已經通過增加最大轉數取得了成績，並改善了像汽缸填塞和燃燒這樣的區域」雷諾賽道引擎運作負責人丹尼斯-謝維瑞爾解釋說， 「在排位賽中，我們期待能獲得零點幾秒的時間，大獎賽前的最後測試會允許我們最終決定可以在正式比賽中有多少的附加表現。 」The dow jones industrial average closed up 3. 2 %, where general motors was the biggest percentage gainer, rising 18 %
道瓊斯工業平均指數報升3 . 2 % ，通用汽車躍升18 % ，為按百分比計算升幅最大的股份。The archipelago is a hazardous traffic median in the great circle route, the shortest path between ports on either side of the north pacific
多島海域是大圓航線上極具危險的運輸中樞，也是連接北太平洋各端港口的最短通道。The channel capacity achieved in our experiments was better than that of the dual homodyne coherent state, homodyne coherent state and squeezed state communication when the average photon number exceed 0. 99, 1. 11 and 2. 06 respectively. it is more interesting that we found in the experiment, that the maximum channel capacity for a single mode - fock state communication can be surpassed with our system when the average photon number exceed 11. 302
我們實驗所得密集編碼的通道容量在光子數大於0 . 99 、 1 . 11及2 . 06時將分別超過相干態雙零差通訊通道容量、相干態零差通訊的通道容量以及壓縮態零差通訊的通道容量；最重要的是，當平均光子數（Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece
將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義The asteroids are the most important small bodies in the solarsystem, and they mainly lies in the two locations - a main belt between the mars ' s orbit and the jupiter ' s and the near - earth space. the most feature of the orbits of near - earth asteroids ( neas ) is that the semi - major axes of the orbits are nearly equal to that of the earth or the perihelia distances are approximate to or even less than the mean distance between the sun and the earth, thus they could move into inside of the earth ' s orbit, so that they might close approach or even colliside with the earth ( or other planets, such as the venus, the mars, etc. ). the characteristic brings about some difficulties in the numerical research during their orbital evolution, which leads to the failure of the normalization technique in the general removal impact singularities of celestial mechanics methods and the symplectic algorithm which is successfully applied to the investigation in quality. by comparing the computation effects of several common numerical methods ( including symplectic algorithm ), and considering the nature of the movement of the small bodies, the corresponding treatments are provided here to improve the reliability of the computation
小行星是太陽系最重要的一類小天體，主要分佈在兩個區域；火星和木星軌道之間的一條主帶和近地空間.近地小行星軌道的最大特點是其軌道半長徑與地球軌道半長徑相近，或近日距離接近甚至小於日地平均距離，其運動可深入到地球軌道的內部，這將導致該類小行星與地球（還有金星、火星等）十分靠近甚至發生碰撞.這一特徵給其軌道演化數值研究帶來一些困難，包括天體力學方法中一般消除碰撞奇點的正規化處理以及對定性研究十分成功的辛演算法都將在不同程度上失效.通過對幾種常用數值方法（包括辛演算法）計算效果的比較，根據小天體運動自身的特性，給出了相應處理措施，從而可提高計算結果的可靠性In term of the probability of communication system and perturbance theory, the model of the effect of srs to error bit ratio in communication system is established. through the way numerical of simulation, limitations to srs to error bit ration of communication system and input optical power, the number of channel etc are discussed. the obtained conclusion has definitely reference value to the design of practical communication
根據數字通信系統幾率的特性和微擾理論，建立了受激喇曼散射對通信系統誤碼率影響的理論模型，並通過數值模擬討論了受激喇曼散射對系統誤碼率、最大輸入功率和通道數等的限制，獲得了一些對實際光通信系統設計有參考價值的結論。Aiming at the present design fashion of domestic bigger tunnel, simulating a bigger tunnel with catholic characteristic, confirming the parameters of traffic inducement and controlling ( tunnel length, traffic, the selection and location of detection equipments, amount of roadway indicative lamp, etc ) on the base of the analog tunnel, discussing the controlling and revulsive mode of tunnel. briefly discussing the constitution of tunnel surveillance and controlling system and the executive means of traffic controlling and inducement subsystem and network structure of tunnel controlling system. finally discussing the conformation of emulational tunnel ' s database and detailed executive program by programming the computer emulation of controlling induce subsystem
論文圍繞「交通誘導與控制」這一中心展開，探討長大隧道交通誘導與控制設備及其控制誘導方式；結合國內外對交通流模型研究的成果，提出一套適合長大隧道交通流特點的交通流模型；並針對目前國內長大隧道的普遍設計方式，模擬一個帶有普遍性特徵的長大隧道，確定了關于交通誘導與控制方面的參數（隧道長度、交通量、檢測設備的選取和位置、車道指示燈的數目等） ；以此模擬隧道為基礎，進一步探討隧道的具體控制與誘導方式；簡要探討隧道監控系統的構成、交通控制與誘導子系統的實現方式，隧道控制系統的網路架構；最後通過編程實現控制與誘導子系統的計算機模擬，討論關于模擬隧道數據庫的構建，具體編程實現等。Qianjiang serve as the economic center of chongqing ' s southeast district, the sub - transport junction of chongqing ' s southeast district under chongqing main - transport junction. lt is cry for carry through building and programming of framework big alleyway, let qianjiang main city be provided with optimal location and the most convenient traffic condition, building qianjiang as the " jacket collar sheep " of chongqing ' s, southeast district economy, it is accord with the integer benefit of chongqing ' s southeast district, tactic orientation of chongqing ' s southeast district economic development and request to qiangjiang development which town clerk, townhall institute
黔江作為渝東南地區的經濟中心、重慶主樞紐下渝東南的次級樞紐，迫切需要進行骨架大通道的布局規劃和超前建設，使黔江主城在渝東南地區具有最佳的區位和最便捷的交通條件，把黔江建設成為渝東南經濟的「領頭羊」 ，符合渝東南發展的整體利益、符合市委、市政府對渝東南區域經濟發展的戰略定位和對黔江發展的要求。Abstract : the vlf through - the - earth communication system is recognized as the most reliable way of conveying dispatching information due to its special transmission media
文摘:由於大地通道穩定，低頻透地通信被認為是最可靠的救急通信方式。Chemical fume hoods shall be of air foil design with 45 degree sloped sections on the sides and top of the hood opening to insure maximum containment and minimum eddying of air currents
化學通風櫃應採用風道設計，側面成45度坡度，罩頂開口，以確保抽氣量最大、空氣渦流最小。Among the easiest to visit is man mo temple, located among the antique and art shops on hollywood road. it s one of the oldest and largest in hong kong, and is dedicated to kwan kung, the god of war, and man cheong, the god of literature
交通最方便的是文武廟，該廟位於古玩店林立的荷李活道，是香港最古老規模最大的廟宇之一，廟內供奉文神文昌及武神關公。Through a lot of experiments and simulations, analyzing the uwb channel model, studying on many papers, a new synchronization algorithm based on barker code and a new channel estimation method based on music algorithm are given. the simulation results of synchronization algorithm in which uwb channel model is used are gotten, and the channel estimation algorithm is demonstrated by measurement data. anyway, both of them get good conclusions
本文通過大量的模擬以及實測的數據分析了通道模型，在參考了大量文獻的基礎上給出了較為實際的同步方法和通道估計方法，並進行了大量的模擬驗證，其中同步方法在結合通道模型的基礎上給出了模擬結論，通道估計方法最後應用於實測數據當中，得出了較為理想的結果。Turbo codes represent the new code structures, which consist of pccc ( parallel serially convolutional code ) and sccc ( serially concatenated convolutional code ). in this paper, the background of turbo codes are firstly introduced, which includes the base principle of error correction code 、 block code and convolutional code ; the principle of turbo code and the iterative decoding is secondly expanded ; the key decoding algorithm : a revised map algorithm and iterative decoding theory are detailed ; then, a new turbo code structure : hccc ( hybrid concatenated convolutional code ) is presented, and the capacity of this code method is analyzed, the average capacity upper bound is derived ; at last, this code is simulated on awgn ( additive white gaussian noise ) channel and rayleigh fading channel
本文首先介紹了turbo碼的背景知識，包括差錯控制的基本原理、分組碼和卷積碼；然後闡述了turbo碼的基本原理，包括turbo編譯碼器結構及迭代譯碼原理；較為詳細地描述了關鍵的譯碼演算法： ?種改進的最大后驗概率（ map ）譯碼演算法及迭代譯碼演算法；提出了一種新的turbo碼結構：混合turbo碼（混合級聯卷積碼） ；並用編碼性能聯合界分析方法對混合turbo碼進行了性能分析，得出了其平均性能上界；並在高斯白噪聲通道和瑞利衰落通道上分別作了一些應用研究及計算機模擬實驗。Having dropped ( back in 1990 ) a plan to build the world ' s biggest ice - breaker, the canadians may also have to seek russian help next time they need to carve out a path to the north pole : even the patrol boats ordered up by mr harper this month won ' t match russia ' s leviathans
由於（ 1990年）撤銷了一項建造世界上最大的破冰船的計劃，下一次加拿大人需要開辟一條通向北極的道路時，可能也不得不尋求俄國人的幫助：即便是本月哈珀下令開赴前線的巡邏艇也比不上俄國人的龐然大物。( 2 ) develop an urban microscopic traffic simulation system, which involves vehicle generation model, network model, traffic regulation model, signal control model, vehicle action model, route choice model and intersection turning model. ( 3 ) realize and research the method that signal cycle and phases are assigned by the traffic need. when vehicles od is known, this method can be used to decide the maximum traffic capacity of signal - controlled intersection and the evaluation reference of current control method
模型中充分考慮了鄰道車輛對駕駛行為的影響及駕駛員的反應延遲，使模型更符合真實情況； （ 2 ）開發了城市微觀交通模擬系統：該系統包括車輛產生模型、路網模型、交通規則模型、信號燈控制模型、車輛行為模型、路徑選擇模型、路口轉向描述模型； （ 3 ）在模擬應用中實現並研究了信號燈周期及其相位按交通需求動態分配的方案，提出該項模擬可用於確定在已知od下，信號燈控制路口的最大通行能力，並可作為現有控制方案的評估依據。Airway resistance ( raw ) tends to increase and inspiratory resistance ( ri ) in 7d increases significantly. compliance of lung ( cl ) has not a prominent change. 2. the alveolocapillary permeability increases during simulated weightlessness and can recover a bit as simulated weightlessness goes on
3秒率oevm x呼氣峰流速oef卜最大通氣量p ）比正常水平降低，其中以7dfevm和zidmvv變化顯著；氣道阻力份刪）增大，以7d吸氣阻力仰變化顯著：肺順應性k1 ）變化不大。Results showed that, for trombe wall solar chimney, there is an optimum ratio of chimney gap - to height to achieve a maximum airflow rate, which is dependent on the inlet design and independent of solar radiation
結果表明，對于trombe墻體式太陽能煙囪，存在可以獲得最大通風量的最佳空氣通道寬度與高度的比值，這個最佳比值是依賴于太陽能煙囪進口的設計，而與太陽輻射強度無關。分享友人