有幅輪 的英文怎麼說
中文拼音 [yǒufúlún]
有幅輪
英文
spoked wheel-
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Iv ) revolute joint element, nonlinear spring - damper element, 3 - d 5 points contact element are applied to simulate the revolute restriction between two caterpillar boards, suspension nonlinear vibration, contact between wheels and caterpillar boards, and contact between caterpillar boards and ground are considered respectively. drucker - prager material is employed to simulate reinforced concrete
4 、應用大幅度轉動約束單元、非線性彈簧阻尼單元、三維五節點接觸單元分別模擬自行火炮履帶板之間的轉動約束連接、懸掛非線性振動及負重輪與履帶板之間的接觸和履帶板與地面的接觸問題；根據材料非線性理論，提出利用drucker ? prager材料建立土壤的非線性有限元模型。Through calculation of a living example and its result analysis verified that while the vibration amplitude is comparatively small and the sine curve is being adopted, the theoretical contour of cam possesses rather good form closure property and is suitable to be applied for high - speed cam
通過實例計算和結果分析，表明該凸輪理論廓線採用正弦曲線，在振幅較小時，有較好的形封閉性，適合用於高速凸輪。The mentioned method is applied to design of pulley block compensation in luffing mechanism and the results show that the method is feasible and effective
在滑輪組補償變幅機構穩健優化設計中加以運用，結果表明該方法是有效的和可行的。Analysis software. the analysis show : the gyroscope effect to the flywheel rotor ' s and the shaft ' s vibration character under high rotate speed should be considered. at this time, the system ' s normal frequency is the function of rotate speed ; the amplitude passing through the resonance field can be lowered obviously by improving the effective damping of the electro - magnetic bearing
建立了高速旋轉狀態下，採用磁軸承作支撐的飛輪轉子和轉軸的動力學模型，給出了有限元法在此問題中的具體應用，並利用i - deas有限元分析軟體具體分析了飛輪系統的共振頻率、系統振型，以及對偏心激勵的響應，分析表明：對于高速旋轉的飛輪轉子和轉軸，應考慮陀螺效應對其動力學特性的影響，此時系統的固有頻率是轉速的函數；通過提高磁軸承的等效阻尼可顯著降低系統通過共振區域時的振幅。According to the crown growth characteristics in industrial eucalyptus stand of short rotation, the unit step function model was put forward for the process with changing point of short rotation eucalyptus clones u6 based on the survey practical stands
摘要針對短輪伐期桉樹人工林林分冠幅生長的特點，在現實林分調查的基礎上，模擬提出了適合有變點的短輪伐期桉樹u6無性系林分冠幅生長階躍函數模型。The results showed the soil enzymes activity and available nutrients in soybean continuous cropping could approach or higher than those of conventional fertilizeration after applying soybean specific fertilizer, which indicated soybean specific fertilizer could modulate the deteriorating soil enzymes and nutrients ecological surrondings, therefore it could overcome the soybean drop in production caused by continuous cropping
結果顯示施用大豆專用肥后，土壤酶活性和有效養分總體均能達到或高於輪作土壤常規施肥水平，這表明大豆專用肥能調控大豆連作所引起的土壤酶活性和養分惡化，最終使得大豆專用肥能克服大豆連作所引起的大幅度減產。Thirdly, the new method and nearest - neighbor method, single linear interpolation, bilinear interpolation were coded by vc + +, and a mfc application, bmpinterpolation, was achieved. many kinds of examples were tested using bmpinterpolation, including single color images and true color images ( 24bits ), photos and images after 3d rendering by 3dmax. the comparison between new method and the others indicates that the new method can not only get higher quality of images but also match the requirement of procedure speed
用該程序可以實現了對單幅位圖文件的讀取和插值放大，通過單色和彩色圖像、照片圖像、三維渲染圖像等放大處理算例的檢驗，說明了本文的方法和程序是成功有效的，新演算法明顯優于幾種簡單插值放大方法的輪廓清晰度，且具有很好的快速性，兼顧了自動立體鏡三維顯示的快速性和清晰度要求。Other major galaxy types are globular clusters, elliptical galaxies, and barred spirals, which have bars of dust, gas, and stars running across the galaxy s center like the spokes of a wheel
其它主要星系類型是球狀群省略星系，和被禁止的螺旋，有塵土氣體，和星酒吧運行橫跨星系的中心象輪子的輪幅。The establishment of gear fault data warehouse the paper studies several gear cases in drive lab of wuhan university of science and technology. the signal of normal gear pair, the one has been worn seriously, the one which has circular pitch error and the one whose pinion has a ruptured tooth is acquired independently. after fft transformation, the amplitude values of 0 - 0. 4 multiple engage frequency, 0. 4 - 0. 5 multiple engage frequency, 0. 5 - 1 multiple engage frequency, 1 multiple engage frequency, 2 multiple engage frequency, 3 multiple engage frequency, 4 multiple engage frequency and greater then 4 multiple engage frequency of every signal are obtained respectively
論文主要完成下列內容: 1 .齒輪故障數據倉庫的建立以武漢科技大學傳動實驗室的若干臺齒輪箱為研究對象，分別採集正常齒輪副、磨損嚴重的齒輪副、有周節誤差的齒輪副和小齒輪有一個斷齒的齒輪副的振動加速度信號，經過fft變換，分別得到每個信號的0 ~ 0 . 4倍嚙合頻率、 0 . 4 ~ 0 . 5倍嚙合頻率、 0 . 5 ~ 1倍嚙合頻率、 1倍嚙合頻率、 2倍嚙合頻率、 3倍嚙合頻率、 4倍嚙合頻率和大於4倍嚙合頻率幅值。The characteristics of the intrinsic frequency distribution of the framed steam turbine - generator set foundation are summarized ; it can been seen that the base plate of the framed foundation does not have much effect on the dynamic response of the foundation, and that the " amplitude method " is better than the " resonance method " among dynamic analysis methods. when designing a framed foundation, as long as the load - bearing capacity and stability is ensured, a flexible pillar is better, the amplitude of vibration can be controlled through adjusting the particle quality in foundation design
論文最後總結了框架式汽輪發電機組基礎固有頻率的分佈特點；指出框架式基礎底板本身對基礎的動力響應影響不大，認為動力分析方法中振幅法優于共振法；並指出框架式基礎設計時，在滿足承載力和穩定性的前提下，柱子應以柔為佳；設計中可以通過調整質點的質量來達到控制基礎振幅的目的。" the recent a reciation was largely triggered by the growing eculation that the authorities are likely to widen the daily trading band, " said li yongsen, an economist with renmin university of china
中國人民大學的經濟學家李永森說： "新一輪人民幣升值主要和不斷增多的關于政府可能將擴大每日交易波幅的猜測有關。" the recent appreciation was largely triggered by the growing speculation that the authorities are likely to widen the daily trading band, " said li yongsen, an economist with renmin university of china
中國人民大學的經濟學家李永森說： "新一輪人民幣升值主要和不斷增多的關于政府可能將擴大每日交易波幅的猜測有關。The sinusoidal gray fringes are simulated by computer and projected on the object by the liquid - crystal light valve in this method, in with the phase - shifting is controlled by computer. then the deformed fringes modulated by object is collected by ccd camera, so optical 3 - d phase measurement for large - scale object can be realized
（ b ）針對目前大尺寸物體光學位相測量輪廓中存在的問題，提出一種用液晶光閥把模擬正弦分佈及多幅有一定相移量的灰度條紋投影到大尺寸三維物體上，通過控制計算機在同一位置進行窗口變換，直接實現相移，進行物體的光學位相三維面形測量。On the other hand, for the pre - press stress being threw by the hub was inserted after cooling with liquid nitrogen, the poor transverse tension strength of the multi - ring flywheel rotor could be counteracted. so the rotate speed and energy storage density can be increased efficiently
而採用多環套裝纏繞技術製造的多層飛輪輪環，在利用溫差過盈裝配方法給復合材料輪環施加預壓應力后，能夠有效避免飛輪轉子的復合材料輪環部分因較低的纖維橫向抗拉強度而破壞失效，從而大幅度提高飛輪轉子的極限轉速和儲能密度。Urbular turbine generator set is suitable for heads from 2m to 15m and large discnarge. its feature is that water flow is axial throughout the passage from the inlet to the outlet, so that the passage is straight conduit essentially. the tubular turbine generator set is characterized by good characteristic of water flow and high efficiency. etc
混流式水輪發電機組廣泛適用於高中低各種水頭，一般從10米至300米，其特點是水流流經轉輪葉片時先沿著幅向進入，然後逐漸變成軸向離開，因而混流式水輪發電機組具有運行可靠，結構簡單，平均效率較高等特點。Combining the design of portal crane luffing mechanism, this paper set up the math model independently and synthetically of the single boom system with compensating pulley and level - balancing weight. use genetic algorithms to optimize the model, the calculated results show as follows the genetic algorithms is effective and manipulable, the synthetically optimize is best than independently optimize. the optimization program of luffing mechanism was build, and this will be a useful tool in the design of crane
結合門座起重機變幅機構的設計，建立了導向滑輪補償系統和杠桿? ?活對重臂架自重平衡系統獨立模型和綜合模型的未平衡力矩最小的優化問題，結合遺傳演算法對它進行了優化，結果證實了該演算法的有效性和可行性，表明了綜合優化比獨立優化更能提高優化的準確性。This article emphatically discussed and analyzed following points : load command feed forward function can improve the rapid respond character of steam turbine generator ; lead of load command have advance control function on boiler main control and can highly improve the stability of main steam pressure ; the use of predict control and state space variable function can improve the quality of boiler steam temperature control effectively, control the steam temperature in the defined range and increase the boiler and turbine life and efficiency even if working state changed in a big range ; linear compensation can restrain the vibration of generator load in the condition of big loa d change
本文重點討論、分析提出負荷指令前饋作用可以提高汽輪發電機快速響應特性；負荷指令的導前功能對鍋爐主控有超前控製作用，能顯著提高主蒸汽壓力的穩定性；採用預測及狀態空間法能有效改進鍋爐蒸汽溫度控製品質，在大幅度工況變化下仍有效控制蒸汽溫度在額定范圍內，提高鍋爐、汽輪機壽命及其效率；汽輪發電機組的快速響應性與汽輪發電機組負荷振蕩問題間的平衡關系，採用線性補償可以有效抑制在負荷變化梯度較大情況下發電機負荷振蕩問題。The derrick to be laid down on deck, cargo blocks, span takles, guide rollers and all moving parts of derrick of derrick to be dismantled. cleaned and greased with special grese
吊桿放置甲板上，吊貨滑車，調節跨幅復式滑車，導輪及吊貨桿上所有活動部件拆開，清潔，加優質潤滑脂。Two features are special to this extraordinary portrait : the sfumato technique and the remarkable landscape
這幅不凡的肖像畫有兩個獨特之處：模糊輪廓技巧和引人注目的風景。分享友人