正面阻力 的英文怎麼說

中文拼音 [zhēngmiànzǔlì]
正面阻力 英文
frontal drag
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 阻 : 動詞（阻擋; 阻礙） block; hinder; impede; obstruct
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 正面 : 1 （人體前部那一面; 建築物臨街的一面; 前進的方向） front; frontage; facade 2 （主要使用的一面） t...
  • 阻力 : 1 （阻礙事物發展的外力） obstruction; resistance 2 [物理學] resistance; drag; drag force; nowel; ...
  1. The mine lies in the band of positive magnetism abnormity, gravitation abnormity, steepness of mohole and ni ~ co geochemistry abnormity. it has geophysical features ; those are great gravity, great magnetic force, great polarization and low resistance

    含礦巖體位於正磁異常帶、重力高異常、莫霍面的陡度帶和ni - co地球化學異常帶上，並顯示重力高、磁力高、極化率高和電阻率低「三高一低」的地球物理特徵。
  2. In education, the author explains that the educational innovation served as premise and security for the development of physics via in - depth analysis on the college education and educational system of physics in germany ; ln philosophy, to avoid the superficial and rigid opinions that philosophy either guides or hinders physics, which is resulted from one - way analysis on the influence of physical knowledge by specific philosophical knowledge, based on the combination of physical achievements by philosophy and profound philosophical knowledge, the author illustrates that the influence on german physics by philosophy reflects more on a kind of spirit a nd this very spirit brings the new quality into the german physics ; in mathematics, by means of analyzing integration of mathematics and physics at different stages, the author is tended to testify that the blooming mathematics in germany is the indispensable condition for the prosperity of german physics because. 2 mathematics provides language tools for the development of physics ; ln culture, by way of analyzing the common features of german physicists and connecting the brilliant german culture, the author audaciously brings forward that the wissenschaft ideas and faust ideas is the important driving force for the prosperity of the development of german physics

    在教育方面，通過對德國大學和物理教育體制的形成的分析，說明教育改革是物理學發展的先導和保證；在哲學方面，作者避免了從具體哲學知識對物理知識影響的單一方式出發而得出「要麼指導要麼阻礙」的兩種簡單僵化觀點的弊端，將哲學對物理學成就的影響和德國物理學家群體很高的哲學素養結合起來分析，說明哲學對德國物理學的作用更多的是體現在一種氣質、精神上，正是這種氣質和精神為德國物理學的發展注入了一種新的特質；在數學方面，通過對不同時期數學和物理學融合程度的分析，證明了發達的數學是德國物理學繁榮和領先的必不可少的條件，它為物理學的發展提供了語言工具；文化方面，通過對物理學家群體特點的分析聯系燦爛的德國文化，作者大膽提出其中蘊涵的wissenschaft思想和浮士德精神是德國物理學繁榮和領先的重要動力。
  3. The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,

    基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。
  4. This paper unfolds engineering disposition and theoretical research of negative temperature high performance concrete ( nthpc ) with the damage of many factors motivation, the project background based on qing - zang railway engineering, which is one of four - emphasized engineering during the tenth five - plan. due to the difference of environment of construction and service between nthpc and ordinary concrete, and therefore durability of nthpc is required to higher level. at a first, nthpc must avoid frozen damage at early age and possess anti - freezing property at later period, in order to meet engineering practicable application need, and this are two emphasized and difficult problems, as for nthpc ; by means of mechanism analysis about deicing - agent ingredient and anti - freezing at early period, adopting composite technique routine of mineral addition + anti - freezing element + water - reducer4 - air - entraining + anti - erosion of steel component etc, based on orthogonal experimental approach, fd - 1 composite functional admixtu re was manufactured, which has more property and orientation on qing - zang railway

    負溫混凝土由於和普通混凝土在施工環境及服役環境上存在的差異，因此表現為比普通混凝土更為較高的耐久性要求；負溫混凝土首先要避免早期的凍害以及具備長期抗凍性能，才能夠滿足工程實際應用的要求，這也是負溫混凝土必須解決的兩大技術關鍵；通過對目前常用防凍劑組分作用機理的分析研究及混凝土早期防凍機理探討，採用礦物外加劑+防凍組分+高效減水劑+引氣+阻銹組分功能復合的技術路線，通過正交試驗設計復配了適應青藏鐵路工程要求的專用多功能復合型外加劑fd - 1 ；並在此基礎上配製不同等級負溫高性能混凝土，開展一系列包括硫酸鹽侵蝕、氯離子滲透、抗凍融循環、收縮及耐磨性等耐久性能研究；通過對fd - 1組分和摻量的調整，優化負溫混凝土在施工特性、力學指標和耐久性三個方面的兼容、協調性。
  5. Now a french historian is locked in an uphill battle against the government over a dna test he says could end the doubts

    如今，一位法國歷史學家正力圖沖破政府方面的阻力，通過dna測試來揭開這一歷史之謎。
  6. For the function of burden of proof, the author holds that burden of proof functions settled disputes impartially, to prevent judicial office from abusing state ' s power, and to confine misusing the right to initiate a private prosecution or the right to defend and to promote efficiency

    在功能方面，筆者認為，證明責任具有公正解決糾紛、阻止權力濫用、限制自訴權和應訴權不當行使及提高訴訟效率四個方面的功能，並進行了詳細的論述。
  7. Based on the pull - out tests data between geogrids and expansive soil / sands arranged by the orthogonal table l9 ( 34 ), the following conclusions are reached : 1 ) the displacement - properties of pullout tests depend on the pullout speed. the law of factors " affecting degree, which influences the parameters between geogrids and soils in the pulling - out procedure, is obtained. with the concept of " equivalent pull - out displacement ( x ) " brought forward, the whole process of pull out tests is divided into two process - " main process ( when x 1. 0 ) " and " residual process ( when x 1. 0 ) ", and three stages - static friction resistance stage, slip friction resistance stage, and residual friction resistance stage

    基於正交設計表l9 （ 3 ~ 4 ）分別安排了影響因素與土工格柵膨脹土或砂土界面相互作用參數的拉拔試驗數據，獲悉： 1 ）拉拔試驗位移特性主要取決于影響因素中拉拔速率；通過分析並獲取影響因素對筋土界面相互作用參數的影響程度及其在拉拔試驗過程中的變化規律，提出了當量拉拔位移（ x ）的概念，並據此將拉拔試驗全過程劃分成「主過程（ x 1 . 0 ） 」和「殘余過程（ x 1 . 0 ） 」 ；且將影響因素對拉拔力或摩擦阻力系數的影響程度分成三階段（靜摩擦阻力階段、滑動摩擦阻力階段，殘余摩擦阻力階段） ； 2 ）不同（規范）定義的筋土界面摩擦阻力系數數值相差較大，但影響因素對摩擦阻力系數影響程度及其變化規律不會因不同（規范）定義而受到影響。
  8. The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material

    本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。
  9. The author advances that the shear connector is simulated by two spring elements, which are vertical to each other and parallel to the interface between steel and concrete, and one multipoint constraint element, mpc element, which is vertical to the interface. the author also puts forward that the crack of the deck is simulated by the gap element which ca n ' t support longitudinal tensile force but can support longitudinal compressive force

    提出了以正交的兩個平行於鋼和混凝土界面的彈簧單元及一個垂直於界面的多點約束（ mpc ）單元來模擬剪力鍵，以小間隙接觸（ gap ）單元來模擬混凝土橋面板的開裂，模型中忽略了混凝土板與鋼梁接觸面間由摩阻而產生的粘著力。
  10. Actually correction coefficient of kinetic energy reflects the non - uniform characteristics of cross - sectional velocity in natural rivers. it is related with hydraulic parameters and can be expressed by chezy ' s coefficient. the larger the resistance of boundary, the more non - uniform the distribution of cross - sectional velocity

    動能修正系數實際上反映了河道橫斷面流速分佈的不均勻性，與斷面的水力要素有關，可用謝才系數c來表示，水流所受的阻力越大，邊界對其影響也就越大，流速分佈愈不均勻，導致動能修正系數增大。
  11. However, a positive osteogenic effect depends on sufficient stimulation provided in terms of the intensity of the exercise workload, duration of the exercise, frequency of training, length of the training period, and site affected by the physical activity

    大體上，阻力運動訓練、承重型的耐力訓練、甚至於日常步行訓練均有助於減緩骨質流失的速度，然而欲得到足夠的骨骼刺激效果仍需視所採用的運動型態與運動量而定，而且養成長期持續運動的習慣才能確保正面效果的維持。
  12. Investigation and interviews showed that the main obstacles standing in the way of hosts - tourists interaction were socio - cultural factors as language barrier and cultural differences, ranking as no. one obstacle, then the lack of skills for and confidence in communication. for hosts, they showed much stronger sense of class - gap while they found they were in sharp contrast with those who tour their land. accordingly, the author proposed counter - measures for solving these problems and measures to maintain those favorable factors functioning well

    最後，就大理麗江的主客交往現狀及將來發展趨勢，作者指出要針對主客交往的誘發因子和各阻力因子、遊客表現出的交往傾向、影響遊客旅遊經歷感受的因素等方面，採取有效措施，設法克服主客交往障礙，努力創造良好的主客交往機會，關注社區福利，正確進行市場開發定位，以趨利避害，並提出了一些相應的建議。
  13. Thus the resistance factor and vibration modes of the soil layer are obtained and used to analysis the pile response. by considering the interaction between the soil layer and the pile with boundary condition of continuity of displacement and equilibrium of force at the interface of soil layer and pile, the dynamic equilibrium equation of pile is solved and an analytical solution for the pile response in frequency domain is yielded, which is used to define complex stiffness and mobility at the level of the pile head. based on the convolution theorem and inverse fourier transform, a semi - analytical solution of velocity response in time - domain subjected to a semi - sine exciting force is given

    首先通過引入勢函數方法對土體位移進行分解，從而將土體動力平衡方程解耦，求解得到了土層的振動模態和阻抗因子，然後利用該解以小應變條件下樁土接觸面上力平衡和位移連續條件來考慮樁土耦合作用，求解樁的動力平衡方程，得到了樁頂的頻域響應解析解、復剛度和速度導納，利用卷積定理和傅里葉逆變換，求得了半正弦脈沖激振力作用下樁頂速度時域響應半解析解。
  14. Result of study indicates that the momentum input along with the branch flow toward the downstream and the additional friction induced by the mixing of main streams with branch flows should be considered for rational analysis of the local energy loss at junctions

    研究結果表明，正確分析管道匯流口水流的局部能量損失機理，必須考慮匯入斷面上支流沿下游主流方向的動量輸入和主支流間相互摻混引起的附加摩擦阻力的影響。
  15. Ami - sliding safety factors are attained when total sliding force and total anti - sliding force are calculated through normal stress and shear stress acting on the element interfaces

    其次，利用剛體彈簧元法求解單元交界面上的正應力和剪應力，從而積分求得滑移路徑上的總滑動力和總阻滑力，進而求得各滑動面的抗滑安全系數。
  16. The passage analyze the negative effect of migration on the income gap, describe the motivations, constraints and characteristics of migration, then analyze the discrimination on migrants in urban labor market and other aspects in a political economy approach. we find and criticize the reasons that urban interest groups discriminate the migrant in the neoclassical growth theory and public expenditure theory approach. the resistance of migration changes from non - historical normal institutions ( such as huko system ) to historical abnormal institutions ( such as employment discrimination )

    本文分析了人口流動對我國城鄉收入差異的消極影響，描述了我國人口流動的動機、限制條件以及特點，並給出了流動人口在城市勞動力市場及其它方面遭到歧視的政治經濟學分析，我們從新古典增長理論和公共支出理論給出了城市利益集團歧視農村流動人口的理由，並對此進行了批判;指出人口流動的阻力從非歷史性的正式制度（戶籍制度）向歷史性非正式制度（就業歧視）的演進。
  17. In the area of elasto - plastic dynamic analysis of frame with friction energy dissipation, the design - oriented nonlinear seismic response time history analysis method for frame with friction energy dissipation has been set up. and the corresponding program idaff is developed using visual c + + language ; the analytic solution of a single - damped - story braced frame with friction energy dissipation under the sine wave excitation has been give ; besides these, a vibration reduction analysis of multi - story frame with friction energy dissipation has been given in the paper and some useful conclusions have been drawn

    在摩擦耗能框架結構彈塑性動力分析方面，本文建立了面向設計的摩擦耗能框架結構非線性地震反應時程分析方法，並利用vc + +編制了相應的程序idaff ；給出了帶有摩擦耗能器的有阻尼單層框架在正弦波激勵下反應的解析解；同時本文從多自山度的角度出發對摩擦耗能框架的影響因素進行分析，得出相關的結論。
  18. However, at present time, the export - oriented economic development strategy, which has been implemented for years, is confronted with g more and more internal resistance as well as that from abroad, for which china has paid an increasingly high cost for economic development

    當前，中國所實施的外向型經濟發展戰略正面臨著越來越大的國內外阻力，付出越來越高昂的發展成本。
  19. Mr bernotat ' s grand plan is facing strong resistance in madrid

    伯諾泰特的宏偉藍圖正面臨馬德里方面強有力的阻撓。
  20. But how to measure grounding resistance of large grounding grid simply and exactly is a difficult problem to electric power staff all the time. this paper has classified measuring methods of grounding resistance at home and abroad, and has analyzed interference factors during measurement, and has summarized principle and characteristic and measuring current and so on of various measuring methods

    本文對國內外現有或正在研究的測量方法進行了分類，分析了測量地網接地電阻干擾的主要來源，並首次全面地對各種方法的原理、特點、測試電流、消除干擾能力和測試結果進行了比較分析、總結歸納，方便后來者研究應用。
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