展旋比 的英文怎麼說

中文拼音 [zhǎnxuánbǐ]
展旋比 英文
aspect ratio
  • 旋 : 旋Ⅰ動詞1 （旋轉） whirl 2 （用車床切削或用刀子轉著圈地削） turn sth on a lathe; lathe; pare Ⅱ名詞...
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  1. If the circumpolar vortex lasts longer than usual in future years, a large ozone hole could be expected to develop above the arctic

    如果環極渦旋在未來幾年裡比正常情況下持續更長時間，一個大規模的臭氧空洞就很可能在北極上空發展起來。
  2. This section essence shrinks the proportion is 1 : 43 simulation model vehicle the east wind - 11 short distance trajectory guided missile truck which develops voluntarily by our country, may mobile launch carries the system is a prototype, the chassis and the missile are the alloy manufacture, the missile may take out from the discharger or revolves along with the discharger to each angle, all vehicle doors may open, the rubber tire may rotate, the zero number of articles approaches 200

    此款精縮比例為1 : 43的模擬模型車以我國自行發展、可機動發射的東風- 11短程彈道導彈車載系統為原型，車體及導彈為合金製造，導彈可以從發射架上取出或隨發射架旋轉至各個角度，所有車門均可打開，橡膠輪胎可以轉動，零件數接近200個。
  3. Besides, the sedimentary facies of upper ganchaigou and lower ganchaigou formation were also mapped in supersequences which are the main target strata for exploration. the high resolution sequence stratigraphic framework showed the genetic relationship between the distributions of sedimentary facies and their tectonic settings. the near - source sedimentary systems such as subaqueous alluvial fan and lake - floor fan are often deposed in rise - hemicycles in the steep slope background in the north, the coarse lithology of fan - delta prograded from north to south in fall - hemicycles, and the braided stream facies are formed in the rise - hemicycles in gentle slope background in the south, braided stream facies prograded from sorth to north in the fall - hemicycles, but the lacustrine facies and salt lake facies developed in the middle part of the area

    詳細的沉積相研究發現，紅獅地區第三系發育有沖積扇、水下沖積扇、河流、三角洲、扇三角洲、湖泊和湖底扇7種主要沉積相類型，並對作為區內主要勘探目的層系的下乾柴溝組和上乾柴溝組進行了以超層序為單位的沉積相平面編圖，以較高的時間解析度揭示了區內沉積相帶的平面展布及其在不同構造背景中的分佈規律，比如在北部的凹陷陡坡背景下，上升半旋迴低水位期通常發育有水下扇、湖底扇等陡岸近源特徵的沉積體系，下降半旋迴高水位期，扇三角洲相粗碎屑巖由北向南進積;在南部的凹陷緩坡背景下，上升半旋迴主要發育辮狀河流相，下降半旋迴辮狀河三角洲相由南向北進積;而中部紅柳泉一獅子溝一帶則為湖泊相沉積和鹽類沉積。
  4. The theme of next generation aviatic technology is to develop battleplan with high performance today. it is necessary that the development of next generation battleplan will involve more trades and profession than the models which are being researched now

    研製高性能的下一代軍機是當今航空技術發展的主旋律，下一代軍機的研製會比現在的在研型號涉及更多的行業及專業。
  5. These include a four - episode tv programme on safer living, a tv programme called " meteorological series iii " jointly produced by hong kong observatory and rthk, a tropical cyclone naming contest, popular science lectures, slogan and bookmark design contests, a seminar on natural disaster reduction, a major exhibition at the hong kong science museum and rescue drill demonstrations

    除了今天的開展儀式，還有一連四集的《晴天行動》電視節目、香港天文臺及香港電臺聯合製作的電視節目《氣象萬千》第三輯、熱帶氣旋命名比賽、普及科學講座、標語創作及書簽設計比賽、減少天然災害研討會、在科學館舉行的大型展覽及拯救演習。
  6. A range of community education programmes are being organized. these include a four - episode tv programme on safer living, another tv programme " meteorological series iii " jointly produced by hong kong observatory and rthk, a tropical cyclone name nomination contest, popular science lectures, a slogan and bookmark design contest, a seminar on natural disaster reduction, a major exhibition at hong kong science museum and rescue drill demonstrations

    除了今天的開展儀式，還有一連四集的晴天行動電視節目香港天文臺及香港電臺聯合製作的電視節目氣象萬千第三輯熱帶氣旋命名比賽普及科學講座標語創作及書簽設計比賽減少天然災害研討會在科學館舉行的大型展覽及拯救演習。
  7. These include a four - episode tv programme on safer living, another tv programme " meteorological series iii " jointly produced by hong kong observatory and rthk, a tropical cyclone name nomination contest, popular science lectures, a slogan and bookmark design contest, a seminar on natural disaster reduction, a major exhibition at hong kong science museum and rescue drill demonstrations

    除了今天的開展儀式，還有一連四集的《晴天行動》電視節目、香港天文臺及香港電臺聯合製作的電視節目《氣象萬千》第三輯、熱帶氣旋命名比賽、普及科學講座、標語創作及書簽設計比賽、減少天然災害研討會、在科學館舉行的大型展覽及拯救演習。
  8. The roto - jet pump is a new kind of very low specific speed pump which is developed in recent years. it is always used in carbin black, food production, chemical industry and deep well mining system to supply the steady outflow with low flux and high pressure

    旋轉噴射泵是近些年才發展起來的一種極低比轉數泵，主要用在碳黑、食品、化工以及深井采礦系統中用以提供小流量高水頭的穩定出流。
  9. Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed

    本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。
  10. Stepping drive of synchronous motors, upgrading the design idea of stepping motors from combined electromagnet theory to rotary magnetic field theory, will make the capability and efficiency of the increment control system improved to a new level, which is the research purpose of ac step motion drive this paper begins with the direct torque control method for pmsm to expatiate ac step motion control theory distinctly

    用同步電動機實現步進傳動；將步進電動機的設計思想從組合電磁鐵理論提高為旋轉磁場，使增量運動系統的容量和效率發展到一個新的水平，這就是交流步進傳動的研究目的。為了比較清楚地闡述交流步進理論，本文首先從永磁同步電動機的直接轉矩控制演算法入手來分析。
  11. The contrast analysis for the vertical distribution feature of the simulated physical quantities such as vorticity, divergence, vertical velocity. spiral degree etc suggests that there are a good disposal among the various physical quantities fields in the different stage during the period of sandstorm development, and reveals that the dynamic mechanism of the forming, developing, decreasing of the sandstorm weather and trigger and indication effects of the micro - mesoscale systems and secondary vertical circulation to the occurring and developing of sandstorm in northwest area

    對渦度、散度、垂直速度、螺旋度等物理量的水平和垂直分佈特徵進行對比分析，發現各物理量場在沙塵暴發展的不同時期有著很好的配置，揭示出西北地區沙塵暴天氣的形成、發展、消弱的物理機制和中小尺度系統、次級垂直環流對沙塵暴天氣發生發展的觸發和指示作用。沙塵暴區上空螺旋度垂直分佈為高層負值，低層正值，螺旋度大小的演變與沙塵暴的出現有一定的對應關系。
  12. The usage quantity of chemical fertilizer and diesel 0 : 1take the first place in our province, the effective irrigated area is ninety percent of the cultivated area with the development of the economy and the improvement of the quality of the people who are engaged in agriculture, the agricultural production also changes : one aspect is the number of the labours who are engaged in agricultural prosecution is decreasing year by year. the labours of the rural areas are liberated from farming step by step and more and more labours take up the third industries and processing industries of the agricultural products and so on. the agricultural production calls for saving cost, racing against time and decreasing consumption. the other aspect is the quality of the people who are engaged in the agricultural production has some changes, that is the number of the labours whose ages are below 25 is

    隨著經濟的發展和從業人員素質的提高農業生產也發生了變化，一方面人力投入糧食生產的比例在逐年下降，從事農業生產的農村勞動力逐年縮少，農村勞動力逐步從農業勞作中解放出來，走向農村第三產業和農產品加工行業等等，農業生產也隨時要求實現節本、爭時、減耗;同時，農業生產中一家一戶小規模生產經營方式和產業結構調整帶來的「插花地」的種植模式，使常規的保護性耕作措施不能完全適應現代農村農業生產的實際需要，結合秸稈還田以耙耕或旋耕代替傳統的鏵式犁翻耕是當前農業生產最為適宜的耕作方式。
  13. Through analysis of potential vorticity in equity - entropy surface field, a relatively high potential vorticity center in cyclone top in low - troposphere have discovered, and make cyclone develop in a more deep cyclone circulation by this ; and an anticyclone circulation zone with more severe low potential vorticity in high - troposphere

    通過對等熵面的位渦分析，發現了對流層中低層的位渦場，在氣旋上方有一個相對高位渦中心，由此使得氣旋在一個比較深厚的氣旋性環流中發展；而對流層高層則是一個伴有較強位渦低值的反氣旋環流區。
  14. At last, three - dimensional mathematical model of gas - particle two phase turbulence was established, and it was adopted to study the gas - particle two phase rectangular jet as well. the distribution of the time - averaged velocity and turbulence intensity was studied, and some of the simulation results were compared with the experimental results ; the coherent structure of flow field was described in the three direction, the evolution and motion of the eddies was discussed too ; the dispersion of fine particles in the three dimensional space was also investigated

    全面地分析了矩形射流氣相時均流場的速度、湍流強度的空間分佈規律，並就部分數值模擬結果與實驗結果進行了對比研究;描述分析了氣相流場湍流擬序結構，對流向、橫向和展向三個方向旋渦的空間結構特點進行分析研究，並分析了流向渦隨時間變化的發展、運動規律。
  15. And then simulations of gas - particle two phase plane wake and gas - particle two phase plane jet were carried out by using this model. after numerical simulations of the two flow fields were finished, series of analytical work was done. first, the distribution of time - averaged velocity, turbulence intensity was analyzed, and some of the simulation results were compared with those of the experiments ; the coherent structure of vortices in the near wall region of the plane wake flow were studied by describing the evolution of the eddy structures, including the forming, developing and shedding from the wall of the vortices in the near wall region ; the coherent structure of vortices in the whole field was also studied, such as the forming, developing, moving, pairing and merging of the eddies etc.

    在對上述兩種流動形態的二維大渦模擬研究中，首先全面地分析了氣相時均流場的速度、湍流強度的分佈規律以及氣相速度的脈動規律等並就部分數值模擬結果與實驗結果進行了對比研究；分析了平面尾跡流場中近壁處旋渦擬序結構，全面和逼真地反映了近壁處旋渦的生成、發展和脫落的規律；描述分析了平面尾跡流和平面射流的全場流動旋渦擬序結構，從整個流場的角度反映旋渦的生成、發展、運動以及旋渦之間相互配對、合併的作用規律等。
  16. The planets in your solar system cooled to a point of having slowed in molecular rotation ; in the slowness a density develops in which time spreads out into a straight line rather than a continuous whole

    你們太陽系統中的行星們正在冷卻到一個已經在分子旋轉中減速的點；在這個減速中，一個密度的成長在這時刻中比一個持續的進程更伸展為一條直線。
  17. The surface panel method has been applied to predict the hydrodynamic performance of highly skewed propeller. the surface of propeller and its trailing vortex are discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution. for highly skewed propeller, the conventional method generating grid oriented along constant radii will result in a high aspect ratio and a high skewness and a twist panel near the propeller tip on blade surface, which result easily in incorrect calculation results of velovity on blade surface, even in iteration divergence and calculation failure. a “ non - conventional grid ” is developed to acoid these problems. this grid can effectively solve the problem of the calculation and convergence for highly skewed propeller. the non - linear kutta condition of equal pressure on upper and lower at the trailing edge is executed by the iterative procedure. by sample calculating, the obtained results are satisfied the experimental data

    採用面元法預報大側斜螺旋槳水動力性能，螺旋槳表面及尾渦面離散為四邊形雙曲面元，每個面元上布置等強度源匯和偶極子分佈.對于大側斜螺旋槳而言，槳葉表面採用常規的等半徑網格劃分方法在近葉梢處將導致大展弦比、大側斜和扭曲面元，這容易使槳葉表面速度的計算結果不正確，甚至會導致迭代過程發散及計算失敗.文中建立了一種「非常規網格」劃分方法，能有效地解決大側斜螺旋槳的計算和收斂問題.槳葉隨邊處通過迭代實現非線性等壓庫塔條件
  18. 2, design a structure makes the liner output higher to 160mv with a liner input about 150 in bridge of spin - valve gmr. in comparison of some typical mr angular sensors it ' s output make a great progress

    2 ，設計了一種結構使自旋閥gmr晶元組成的橋路輸出電壓信號線性區達到約150 ，輸出幅度達到了160mv ；相比一些典型的磁阻非接觸式角度傳感器，量程獲得了可觀的擴展。
  19. The function of software and user interface are designed in details this thesis examines the development existing circumstance and future about condition - based maintenance internally compared with externally. on the based of establishing rotating machinery malfunction diagnosis model, familiar malfunctions on high pressure getting rid of squama are analyzed and instanced

    本文對比分析了預測維修體制在國內外企業中的應用現狀和發展前景；在建立了旋轉機械故障診斷模型的基礎之上，對高壓水泵的常見故障類型作了分析。
  20. At the entrance of the rotating curvilinear pipe, both the development of flow structure and temperature distribution depend on f and the characteristic quantities of flow and heat transfer change obviously

    在曲線管道的開口端，流場結構的發展過程與f密切相關，開口端各流動特徵量變化十分顯著。管道的摩擦系數比沿軸向變化與入口類型以及旋轉條件密切相關。
分享友人
分享到 Line

分享到臉書