dimensionless 中文意思是什麼

dimensionless 解釋
無量鋼的無維的，無度的
  1. It is not satisfactory from a dimensional standpoint, since the power to which we raise e must be dimensionless.

    從量綱的觀點來看，它是不能令人滿意的，因為e的冪必須是無量綱的。
  2. Analysis of ejector performance using dimensionless parameters

    在用偏最小二乘法
  3. Then fuzzy maths is used here to get dimensionless form of the results, thus the quantitative index subjection model is build. by method of fuzzy statistic, the qualititive index subjection is model is build, too

    運用模糊數學方法，對有無對比值無量綱化，建立定量指標隸屬度模型；對定性指標分級量化，得到定性指標的隸屬度。
  4. ( 2 ) the liman problem is normally adopted to check the liability of numerical method. the calculation error was within 9 % by comparison with the theoretic solutions of liman problem in the following case, the dimensionless calculation length was 2 with high pressure zone 0. 8, and the dimensionless state parameters were p1 = 2, p2 = 1, p1 = p2 = 1, u1 = u2 = 0. experiment results in literature [ 8 ] were used to check the adaptability of the numerical model developed here for unconfined gas cloud explosions and the calculation error was within 13 %

    （ 2 ）數值方法的可靠性通常用黎曼問題的解析解檢驗，本文以無量綱計算區長度為2 ，高壓區長度為0 . 8 ，狀態參數為p _ 1 = 2 ， p _ 2 = 1 ， _ 1 = _ 2 = 1 ， u _ 1 = u _ 2 = 0條件下的黎曼問題解析解對所編制的爆炸場計算程序進行了考核，結果表明該程序的計算誤差在9以內；為考核本文計算模型預測開敞空間氣雲爆炸的適用性，以文獻[ 8 ]的實驗數據進行了校核，計算誤差在13以內。
  5. The numerical procedure has been derived in dimensionless form.

    數值程序是按無因次形式推導的。
  6. The solution presents representative profiles for the dimensionless velocity and the skin friction coefficient at different permeability and injection parameters

    給出了量綱為一的速度分佈以及在不同滲透參數情況下壁摩擦系數的變化。
  7. And dimensionless kinetic energy of cbl in its stationary state,

    可以引入邊界層平均動能達到其第1個峰值所需的時間
  8. A dimensionless physics is not so profound as it may sound, nor would it necessarily be a terminus of man's downward probing.

    無量綱物理學不像聽起來那麼深奧，也未必是人們向深處探索的終點。
  9. 3. a dimensionless parameter i. e. breaking symmetry a is defined which reflects the characteristic of molecular arrangement in non - symmetric lc cell, the expression is where d is the distance between the maximal tilt angle 0m and the below substrate, l is the thickness of lc cell

    定義了一個反映不對稱液晶盒液晶分子排列對稱性特點的無量綱量? ?對稱破缺，定義式為= （ d - l / 2 ） / （ l / 2 ） ，其中d為傾角最大值_ m距下基板的距離， l為液晶盒的厚度。
  10. Firstly, in order to treat the local weakened effect of the crack on the shaft, the equivalent line - spring model is built. then the constitutive equations are derived and the flexibility model of the rotating shaft is discussed. based on the lagrange equations, the non - linear dimensionless differential equations of the single rotor system with the disk and crack located at an arbitrary position of the shaft are obtained

    首先為處理裂紋對軸的局部削弱作用，提出了等效線彈簧模型，推導了線彈簧彈性本構關系，獲得了裂紋轉動軸的柔度模型，然後，應用lagrange方程建立了盤和裂紋處于軸任意位置的無量綱的單盤轉子系統的非線性運動控制微分方程。
  11. Awed by the dimensionless task, students struggle with uneven success to assimilate and survive.

    深廣無度的學習任務威懾著學生，他們以參差不齊的學習成績掙扎著消化知識，以求生存。
  12. Dimensionless quantities in physics are those that require no unit.

    物理學中無量綱的量就是不需要單位的量。
  13. Dimensionless numbers may result either from counting or from taking the ratio of two quantities expressed in the same unit of measurement.

    無量綱的數，或者由計數而得，或者由求兩個採用同一計量單位的量之比率而得。
  14. When the dimensionless governing parameters exceed some critical value, the bifurcation phenomena in the rotation pipe with rectangular and elliptical will appear and the flow structure becomes more complicated

    對于矩形截面和橢圓截面管道，當控制參數較大時，流動會出現分叉現象。
  15. 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。
  16. Heat transfer ; concepts, dimensionless parameters

    熱傳遞.概念非尺寸參數
  17. The edc cracking reaction rate is higher in the wall zone and reaches a maximum at 0. 3 of dimensionless length of reactor coil

    表明確定最優的爐管管徑時必須考慮提高裂解速率與降低結焦速率之間的平衡。
  18. What good are dimensions then, if we really measure dimensionless numbers

    既然我們測量的是無量綱的數字，那量綱有什麼用呢？
  19. In this paper, dynamic stability of parametrically excited flexible cam - follower system on the weakly nonlinear condition is investigated by using the combination of both the method of multiple scales and the technique of fourier series expansion. the equations of approximate transition curves in the plane of the dimensionless frequency and excitation ( amplitude ) parameter that separate stable from unstable solution are derived

    隨后，本文採用多尺度法並結合fourier級數展開，分析了不同的凸輪從動件運動規律和不同的凸輪的升程、停程以及回程的時間分配規律下，無間隙的周期時變凸輪系統模型的穩定性，獲得了各種規律下的凸輪系統的穩定區間圖。
  20. The concept of light coming from a point is an approximation. no real world light source is dimensionless. all light is shed by surfaces, not by points

    來源於一點的照明概念其實是一種近似。真實世界里光源都是有維度的。所有光線都是從表面投射，而不是從點。
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