解螺旋化 的英文怎麼說
中文拼音 [jiěluóxuánhuà]
解螺旋化
英文
despiralization-
Since complicated differential and integral operations were involved in the kernel of the integral equation, we simplified the equation and got the nakano equation. as instances, the planar archimedean spiral antenna, the planar equiangular spiral antenna, the monofilar helical antenna, the conical helical antenna with fixed ascending angle and the conical equiangular - spiral antenna were analyzed through the moment method. all of the results matched fairly well with the references and experiment results
這種方法的積分方程的積分核里含有復雜的微積分運算，為了簡化計算，本文在推廣的海倫積分方程的基礎上，對方程進行了簡化，推導了nakano方程，並以平面阿基米德螺旋天線，平面等角螺旋天線，軸向模圓柱螺旋天線，具有固定升角的圓錐螺旋天線和圓錐等角螺旋天線為例，用矩量法求解了天線上的電流分佈，研究了螺旋天線輻射的寬頻帶特性，所得的結果均與參考文獻吻合很好。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Helicase any of a group of enzymes that catalyze the unwinding of double - stranded nucleic acids such as dna, using energy from atp
解螺旋酶（蝸牛酶） ：一組可以催化象dna這樣雙鏈核酸解螺旋的酶，由atp提供能量。This paper develops a mathematical model for the solution to the longitudinal tooth curve of an internal gear shaver based on the simplified principle for space transmission of a helical gear pair without flank clearance, and proposes a calculating approach of the profile modification of the grinding wheel to be used for grinding the longitudinal tooth curve of the shaver
摘要用簡化的空間螺旋齒輪作無側隙嚙合傳動的原理，建立了求解內剃齒刀齒向曲線的數學模型，並給出了修磨這種齒向曲線的盤形砂輪的廓形計算方法。Ph linearization method is employed to solve a nonlinear reynolds equation for a steady state and micro - scale flow field, and the approximate function expressions of gas dynamic pressure and velocity in the spiral groove are obtained
摘要應用ph線性化方法、迭代法，近似求解了螺旋槽內穩態微尺度流動場的非線性雷諾方程，求得了氣體動壓和速度分佈的解析解。The general formulas for interaction energy and the force acting on the dislocation due to the presence of an elliptical inhomogeneity under longitudinal shear are given. the force acting on the dislocation is figured out, particular discussion being given to its variation with the dislocation azimuth and other parameters. it is shown that the force acting on the dislocation first reduces and then increases with the augment of dislocation azimuth
首次導出了縱向剪切下夾雜內外螺旋位錯引起的耦合干涉能與耦合位錯力的一般解析表達式，並討論了位錯力隨位錯方位角及相關參數的變化規律，發現縱向剪切下位錯力幅值隨位錯方位角的增大先減小后增大。It tell us : the abrasive capability of fly ash ; the similar calculation of ash erosion ; the calculation of ash erosion in the tube in turn and tube out of turn ; the reason of tube abrasion for gas flue ; the influence of air parameter for fly ash erosion ; the influence of changing temperature ; the influence of the flue gas composition, etc. next, it advances the solving measure ; reduce the flue gas velocity ; reduce the concentration of fly ash ; responsible construction : replace smooth tube with spiral tube ; use the new material of abrasion ; fuel desulfurization ; reduce so3 of flue gas ; raise flue gas temperature, making it up the dew point ; use the abrasion - resistance material to resist abrasion
討論了飛灰磨損性能、管壁受飛灰沖蝕的近似計算、灰粒對順列管和錯列管的磨損計算、煙氣走廊引起對流管束的磨損機理、空氣動力參數對飛灰沖蝕的影響以及受熱面壁溫變化及煙氣成份對飛灰磨損的影響等問題。接著提出了解決的措施：降低平均煙氣流速；降低飛灰濃度；使用鰭片管、螺旋翅片管代替光管；選擇合適的結構及排列方式，減少煙氣中so3的含量；提高受熱面壁溫使之大於煙氣的露點溫度；採用抗腐蝕材料作受熱面等防腐蝕的措施。Abstract : decomposition of alcohol and acetyl spiramycin wastewater by supercritical water oxidation were investigated. the result showed that supercritical water oxidation was an effective method for treatment of high concentration organic wastewater. at the condition of experiments, cod removal efficiency of wastewater could reach up to 99. 2 %
文摘:對酒精廢水和乙酰螺旋黴素廢水進行了超臨界氧化降解的研究，結果表明，超臨界水氧化法是處理高濃度有機廢水的一種有效方法，在實驗的條件范圍內，廢水cod的去除率最高可達99 . 2 % 。3 、 the single - phase laminar flow and heat transfer has been calculated by different discredited scheme in helical tube and the results are very in accord with the obtained experimental data
3 、採用不同的差分數值離散格式，對螺旋管內單相層流流動換熱進行了數值計算，深入了解螺旋管內單相流動及強化換熱機理，其計算結果和已有的實驗數據非常吻合。Numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation. it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source. the flame area which has developed from the fire source is an area of chemical reaction caused by combustion. even if grids in the vicinity of the fire source are made fine, it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface. therefore, we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results. it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall. the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume
運用cfd進行數字模擬，以了解縱向通風隧道內熱煙氣流的特性.通過模擬發現對火源進行模擬非常重要，熱煙氣流特性受火源位置的影響很大，並且對火源模擬方法很敏感.火源生成的火焰區是燃燒引起的化學反應區域.即使火源附近的木垛排列完好，也很難在考慮這些化學反應條件下模擬熱生成區域.建議考慮縱向通風隧道內火焰形狀並對它進行數字模擬.模擬結果與試驗結果非常吻合.試驗證明，在縱向通風隧道內，熱煙氣流從靠近墻體火源處順風向隧道中心蔓延.數字模擬結果發現，火災羽流造成的螺旋上升空氣會在墻體和羽流之間形成一個渦流區Abstract : numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation. it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source. the flame area which has developed from the fire source is an area of chemical reaction caused by combustion. even if grids in the vicinity of the fire source are made fine, it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface. therefore, we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results. it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall. the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume
文摘:運用cfd進行數字模擬，以了解縱向通風隧道內熱煙氣流的特性.通過模擬發現對火源進行模擬非常重要，熱煙氣流特性受火源位置的影響很大，並且對火源模擬方法很敏感.火源生成的火焰區是燃燒引起的化學反應區域.即使火源附近的木垛排列完好，也很難在考慮這些化學反應條件下模擬熱生成區域.建議考慮縱向通風隧道內火焰形狀並對它進行數字模擬.模擬結果與試驗結果非常吻合.試驗證明，在縱向通風隧道內，熱煙氣流從靠近墻體火源處順風向隧道中心蔓延.數字模擬結果發現，火災羽流造成的螺旋上升空氣會在墻體和羽流之間形成一個渦流區It was found that in the simulated physiological solution, the hydrogen bindings between some amido groups in the mp - 11 molecules are decomposed and the mp - 11 dimers become monomers. it induces the increase in the contents of the a - helical and ( 3 - turn conformation, the decrease in the content of the random coil conformation of mp - 11 as well as the increase in the exposure extent of the heme group. therefore, the reversibility of the electrochemical reaction and the electrocatalytic activity of mp - 11 for h2o2 reduction increase comparing the situation in the aqueous solution
發現在模擬生理條件下， mp - 11分子的多肽鏈上一些酰氨基的氫鍵發生了解離，使部分雙聚的mp - 11分子變成單體分子， mp - 11分子二級結構中-螺旋和-轉角結構的含量增加，無規捲曲結構含量降低，導致了mp - 11分子中血紅素的暴露程度變大，因此mp - 11電化學反應的可逆性和對h _ 2o _ 2還原的電催化活性比在水溶液中有所增加。Surface chemical analysis - medium - resolution auger electron spectrometers - calibration of energy scales for elemental analysis
表面化學分析.中解析度螺旋電子光譜儀.元素分析用能量標度的校準Surface chemical analysis - high - resolution auger electron spectrometers - calibration of energy scales for elemental and chemical - state analysis
表面化學分析.高解析度螺旋電子光譜儀.元素和化學狀態分析用能量標度的校準With summarized a great deal of datum in home and overseas, the paper will discuss performances of liquid spiral groove seal from several aspects, such as its principle, developmental actuality and seal capability. the paper introduces firstly a new brief and fast method that derived from spiral groove seal analytics. this method has been applied in the program system design of out - armed - out - flow spiral groove seal
首先通過對螺旋槽密封解析法思想的闡述，為實際工程的密封性能分析提供了一種簡潔、快速的判別方法，並開發了一個可以用於外裝外流形式密封性能分析的程序；隨后採用有限差分數值方法，對特定條件下的reynolds方程進行離散化處理，並以此作為密封端面間潤滑薄膜特性研究的理論基礎。Effects of physical factors on the growth of strain ag were of light intensity, temperature, inoculum volume, initial ph, effects of nutrient factors on the growth of strain ag included organic carbon sources, organic nitrogen sources, growth factors, hormone etc., and the correlation among nutrient factors being considered. the growth condition of single filament on the plate was also studied
主要內容包括物理因子如光強、溫度、接種量和ph值等對螺旋藻生長的影響；化學因子包括有機碳源、有機氮源、生長因子、生長激素等對螺旋藻生長的影響及這些營養因子之間的綜合作用，並解決了單藻落平板生長問題。Recent adances in multislice ct imaging hae reolutionized the exploration of r anatomy, especially for depicting the three - dimensional appearance of noncompaction - like remodeling of the ar in modified tga in addition to transposition of the great arteries
多層螺旋ct成像的發展為右室解剖學帶來了革命，特別是在大動脈轉位以外，能夠給出矯正性大動脈轉位的右室緻密化不全樣重塑的三維表現Recent advances in multislice ct imaging have revolutionized the exploration of rv anatomy, especially for depicting the three - dimensional appearance of noncompaction - like remodeling of the arv in modified tga in addition to transposition of the great arteries
多層螺旋ct成像的發展為右室解剖學帶來了革命，特別是在大動脈轉位以外，能夠給出矯正性大動脈轉位的右室緻密化不全樣重塑的三維表現Resistance of the stator is obtained by solving a 1 - d magnetic field diffusion problem. based on the code, curves of fcg ' s inductance, resistance, temperature and its output current, voltage are calculated. secondly, the expanding process for an armature of a helical fcg is studied in depth by a nonlinear, explicit finite - element ( fe ) code
數值計算電感時考慮了螺旋型fcg的三維效應，以及電樞表面鏡像電流的分佈，並通過求解圓柱型導線的一維磁場擴散問題比較精確地得到了fcg定子的電阻，在此基礎上計算了fcg裝置的電感、電阻、輸出電流、電壓和溫度等隨時間的變化。分享友人