near spherical 中文意思是什麼

near spherical 解釋
近似球形的
  • near : adv 1 近 接近 鄰接 (opp far)。2 〈口語〉幾乎 差不多 將近。3 節省地。prep 接近 在…的近旁;快要。...
  • spherical : adj 球的;球面的;球形的,圓的;天體的;天空的。 a spherical bush 【機械工程】球面襯。 a spherica...
  1. Sori borne near the costule, indusium spherical, membranous

    孢子囊群靠近中脈著生;囊群蓋球形,膜質。
  2. A spherical or oval nucleus is near the centre of the cell.

    在細胞的近中央處,有一個圓形或卵圓形核。
  3. The glint suppression using high resolution range profile under conical angle measurement is studied, the angle information in signal components of scatters are extracted and averaged to suppress the glint. nonlinear kalman filtering methods under near spherical coordinate are analyzed and used to get more accurate tracking

    研究了圓錐掃描測角體制下基於距離高分辨的角閃爍抑制方法,利用距離維高分辨像,提取強散射中心反射信號分量,在此基礎上估計出各個強散射中心的角度測量值,採用平均方法減少角閃爍對測角的影響。
  4. In the first part, the basic knowledge of particle scattering in meteorology and physics was introduced. the particles to be discussed include aerosol particles, fog droplets and raindrops and the em wave band in the discussion is near - infrared. in the second part, the mie theory was briefly reviewed and was applied to investigate the scattering characteristics of spherical atmospheric particles, the result shows that in the visibility measurement meter using forward - scattering method, when the working wavelegth is between 0. 8 m ~ 2 m, the scattering angle is between 25 ~ 40, the distinguishability and the relative scattering intensity would be better than those under other conditions. in the third part, the superellipsoid was used to describe a wide range of shapes such as spheres. ellipsoids and cylinders. an improved t - matrix method which can be used to calculate arbitry shaped particle ' s scattering field was introduced, and the scattering characteristics of non - spherical atmospheric particles was investigated with this method

    計算結果表明,從相對散射強度、同一方向上不同粒子散射的可區分程度來看,在散射式能見度探測儀器中,工作波長介於0 . 86 m 2 m ,探測角度選取前向25度40度時,探測的結果將會是比較理想的。第三部分中,使用超橢球方程來統一描述各種非球形粒子的形狀,然後使用t矩陣方法計算了一些形狀的非球形粒子的近紅外散射特性。另外,在本文中還針對球形粒子的散射場提供了一種三維可視化方法,使對散射場強度的空間分佈的理解更加簡單,直觀。
  5. The numerical results indicate that the deformation within the solid inner core is very small. however, in the fluid outer core, the changes of the displacement with relatively low spherical harmonic degree ( n < 10 ) is very complicated via the radius, due to the resonance near the eigenfrequenies of the core long - period oscillations. while the spherical harmonic degree of the loading is larger than 10, the deformation and the gravitational perturbation in the core are very small, and the earth ' s deformation response is dominantly represented as the radial displacement in the elastic mantle

    研究了地球在日月引潮力和表面負荷作用下的形變特徵,數值計算結果表明,在固體內核中的形變很小,由於在長周期核模本徵頻率附近的共振,液核中低階( n 10 )位移隨半徑的變化非常復雜,當負荷階數超過10時,地核中的形變和擾動位都很小,地球的響應主要表現為彈性地幔中的徑向位移,且隨深度增加急劇減弱,地表負荷love數與信號頻率的依賴關系很弱,給出了體潮love數計算的一種有效的近似處理方案。
  6. Due to its complexity of the problem, the theories and experiment results obtained are discrepant, and some of them are even contrary one another. started from the influence by movement rules of small cavities and solid particles, the mechanisms of combined effect of cavitation and sand abrasion are study in this thesis from the aspect of the turbulent coherent structure near the wall. first, a dynamic equation is established for a single spherical bubble and single spherical sand under the non - turbulent coherent structure near the wall, and then a dynamic equation established under the turbulent coherent structure near the wall

    首先從理論上推導出在典型湍流邊界層模式的非擬序結構下空泡與固體顆粒的近壁區運動方程,然後推導出湍流近壁擬序結構作用下的空泡與固體顆粒的近壁區運動方程,再將兩種不同條件下的的運動方程進行比較,指出湍流近壁區的擬序結構對空蝕與磨損的發生具有決定性的意義,即正是由於擬序猝發作用的存在,才使得空泡、沙粒對壁面的空蝕與磨損作用得以發生。
  7. For every large time intervals and for stars near to the pole, it is necessary, however, to use the exact formulae of spherical trignometry.

    對于很長的時間間隔和靠近極星的恆星,必須使用精確的球面三角公式。
  8. The test results have showed that the w - cu powder produced by the homogeneous precipitation process has a near spherical shape, a particle size ranging from 50 to 200nm and a uniform distribution of w and cu gradients

    研究結果表明,均相沉澱法制備的w - 30wt . cu復合粉末顆粒明顯呈球狀, w 、 cu組分呈均勻、彌散分佈,透射電鏡觀測顯示其粒徑范圍在50 - 200nm之間,為超細粉體。
  9. Practice for defining size, calibration, resolution, and counting accuracy of liquid - borne particle counter using near - monodisperse spherical particulate material

    使用近似單向擴散球形顆粒材料定義液體傳送顆粒計數器的尺寸校準解析度和計數精度慣例
  10. The impsar wavefront reconstruction theory takes into account of the propagation property of spherical wave. therefore, it can be used to interpret both the near field and far field impsar applications

    當成像系統用於近場應用時,投影重建理論需要加以改進以加入電磁傳播球面波波前的影響。
  11. Abstract : taking advantage of charge simulation method and potential coefficientmethod for ellipsoids, point effects of electric field near the surfaceof a satellite are calculated nummerically. antenna point effects on a high voltage spherical satellite arecalculated as an example

    文摘:本文使用模擬電荷法和扁橢球體的電勢系數法較好地解決了尖端效應的數值計算問題,並用這一方法,計算了衛星表面尖端的效應
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