drag force 中文意思是什麼

drag force 解釋
浮錨阻力
  • drag : vt （ gg ）1 拖，曳；拖動，拖著（腳、尾巴等）；硬拖（某人）做（某事）[至（某地）]。2 打撈，（用撈...
  • force : n 1 力，勢。2 體力，氣力，精力，魄力。3 暴力，壓力；兵力，武力。4 〈pl 〉 部隊，軍隊，兵力。5 勢...
  1. The drag force decreases as the air density decreases.

    當空氣密度減小時阻力也減小。
  2. The drag is a force per unit area of the layer.

    拖力是流層單位面積的力。
  3. The aerodynamic characteristics of a projectile with wrap around fins are studied systematically in this paper, as follows : 1. the lift coefficients 、 drag force coefficients 、 pitch moment coefficients 、 pitch damping moment derivatives and roll damping moment derivatives are obtained from engineering calculation through looking wrap around fins as flat fins of the same projection aera

    本文對某卷弧尾翼彈氣動特性進行了系統研究，主要內容與結論為: 1 .將卷弧翼按照相同投影面積的平板翼進行工程估算，得到升力系數、阻力系數、俯仰力矩系數、俯仰阻尼導數、滾轉阻尼導數曲線。
  4. The paper has founded the model of laser transmission in launch process and the movement model of laser - powered vehicle, and has analyzed the influence on performance of launch system, which was raised by some factors, for instance, the performance of thruster, the attenuation in transmission, the height of mode - transform, the laser power, the air drag force, the launch height, and so on

    本文研究了激光推進微小衛星發射系統的概念和性能。建立了發射過程激光傳輸和激光推進運載器運動模型，分析了推進系統性能、大氣傳輸衰減、模式轉換高度、激光器功率、大氣飛行阻力、發射點高度等因素對發射系統性能的影響。
  5. The results show that, comparing with the gas pressure drops calculated by the modified ergun equation, in the cases of the gas reynolds number is small, due to the presence of the dead space, the observed p in the experiments are bigger than that obtained by calculation, and when the gas reynolds number is large, because of the small interfacial viscous drag - force between gas and liquid, the p observed are smaller than that obtained by calculation

    結果表明在氣相雷諾數較小時，由於停滯孔隙率的存在，實測壓降值比修正厄根方程計算的值大；氣相雷諾數較大時，氣液界面上產生的粘性曳力較小，實測壓降值比修正厄根方程計算的值小。
  6. Abstract : a formula for calculating the minimum underbalance in lower permeability reservoir is obtained by applying a drag force function to testing data

    文摘:通過將拖曳力函數用於油田測試數據，提出了確定低滲透地層最小測試壓差的公式和方法。
  7. In many cases an overall drag coefficient is given so that the net force on the surface can be determined.

    在許多情況下，總的拖曳系數是已知的，因而可以確定作用於表面上的凈力值。
  8. Numerical simulation of drag force on non - spherical particle in gas - particle two - phase flow

    氣固兩相流動中非球形顆粒所受曳力的數值研究
  9. Firstly, based on the present research all over the world, a 3d quasi - single phase model is built together with k - equations. the special feature of this model is taking account of the influence of interaction between liquid and gas, that is to say, the influence of interphase drag force, lifting force perpendicular to the relative velocity, virtual mass force and gas or liquid volume fraction in the fluid field have been considered. a 3d two - fluid model is also built in order to describe more accurately the fluid flow on distillation trays by comparing the computational results of quasi - single phase mathematical model with of two - fluid mathematical model

    本文在國內外已有的研究基礎上，首先建立了以k - （封閉模型為基礎的三維擬單相流模型，該模型的特點在於充分考慮了氣液兩相間相互作用的影響，即計入了相間曳力、橫向升力、虛擬質量力和氣、液相含率對流場的影響；並建立了塔板三維雙流體模型，主要目的是通過對比擬單相流數學模型、雙流體數學模型的計算結果，建立能夠準確描述塔板上流體流動的數學模型。
  10. According to dynamical characteristic of the bubble motion in the flow field, and under the assumptions of isothermal system without interior heat source, uniform bubble size, and ignoring surface tension, the mathematical expressions for interfacial momentum exchanges have been deduced which include drag, virtual mass force, and lift

    針對氣液泡狀流中氣泡運動力學特性，在系統絕熱、無內熱源、忽略表面張力、氣泡尺寸均一前提下建立了氣液相間曳力、虛質量力、升力的數學模型表達式。
  11. The gas was slowed by a drag force similar to air resistance

    由於類似空氣阻力的牽引作用，這些氣體的（運行）速度減緩。
  12. Drag force characteristics and calculation of water flow around pile

    樁柱水流繞流阻力特性及其計算
  13. If a strong electric field accelerates a high - speed electron, the drag force becomes smaller, which allows the electron to move even faster, thereby reducing the drag force further, and so on

    如果有強大電場使高速電子加速，則阻力的降低使該電子移動得更快，進而降低阻力，以此類推。
  14. Shan - tarng chen, shu - chin wang, experimental determination among available theories describing the drag force exerting on steel spheres and cu and al cylinders moving in a viscous fluid. physica scripta, vol. 70, 349 - 353, 2004

    陳美玲、王淑琴、林淑靜、黃平屯， 2004 。 」國二學生設計與進行開放性實驗的表現之個案研究?以探究影響浮力大小的因素為例」 。 2004年物理教育學術研討會。
  15. Others posited that dark matter was the culprit : it might exert a gravitational or drag force

    另有些人則斷定暗物質才是惹禍的元凶：它可能會對太空船施加重力或阻力。
  16. Numerical simulation of drag force on a particle in dense gas - particle two - phase flow

    稠密氣固兩相流中單顆粒所受氣動力的數值模擬
  17. In the 1 ight of results, the interphase pressure can be ignored and the interphase lift force plays a trifling role in the friction reduction, while the gravity - buoyancy, the interphase drag force and the virtual mass force are influential, especially in the bigger bubble

    結果表明，相間壓力可以忽略掉，相間升力起的作用比較小，而重力-浮力、相間阻力和虛質量力的影響比較大，特別是在大氣泡中。
  18. The collisions create an effective drag force that is similar to what you feel when you stick your hand out a car window : as the car goes faster the drag force increases, and as the car slows down it decreases

    碰撞會產生有效阻力，就像開車時將手伸出車窗的感受：阻力隨車速增加而變大，車速減慢即變小。
  19. In an edt, the electrical power produced is the rate of work done by the magnetic drag ? that is, the magnitude of the drag force times the velocity of the satellite ( relative to the magnetized ionosphere ), which is about 7. 5 kilometers per second in leo

    在edt中，生成的電功率等於磁拖曳力做功的速率，也就是拖曳力的大小乘上衛星相對于磁化電離層的速度，在leo上約為每秒7 . 5公里。
  20. But if the electron velocities are high enough ? at least six million meters per second, or about 2 percent of the speed of light ? the drag force actually decreases the faster the electrons go [ see illustration on page 69 ]

    但如果電子的速度夠高（至少每秒600萬公尺，約相當于光速的2 % ） ，則電子行進越快，阻力反而越小（見91頁曲線圖） 。
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