曲率主半徑 的英文怎麼說

中文拼音 [qūlǜzhǔbànjìng]
曲率主半徑 英文
principle radius of curvature
  • 曲 : 曲名詞1 （一種韻文形式） qu a type of verse for singing which emerged in the southern song and ji...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 半 : Ⅰ數詞1 （二分之一） half 2 （在 中間的） in the middle; halfway 3 （比喻很少） very little; the l...
  • 徑 : Ⅰ名詞1 （狹窄的道路; 小路） footpath; path; track 2 （達到目的的方法） way; means 3 （直徑的簡稱...
  1. By means of curvature estimation of vertices, arc identification and arc grouping, a set of profile curves are computed to describe a rounding feature. meanwhile, a rounding mesh is extracted from the mesh model. ( 2 ) approaches of feature - based local modification on shell meshes are studied

    提出了一種等半徑及變半徑圓角過渡特徵的提取演算法，採用二次曲面擬合估算出網格頂點的主曲率，根據網格過渡區域的曲率特性，計算出一系列截面輪廓線來描述圓角過渡特徵，同時將過渡區域數據從模型中分離。
  2. Its reliability has been tested though examining. the influence laws of mould structure, including wiper die and the style, size and installed position of mandrel, have been studied. combined with the theoretical analysis of perfect pure bending, the tendency of relative bending radius r / d and relative wall thickness t / d to one of the major quality target - the maximum wall thickness reduction ratio is also studied

    通過數值模擬研究獲得了包括防皺塊和芯棒形式、尺寸和安裝位置在內的模具結構對製件成形質量的影響規律；結合對理想純彎曲的理論分析，研究獲得了相對彎曲半徑r / d 、相對壁厚t / d對製件主要質量指標之一的最大壁厚減薄率的影響趨勢和大小。
  3. In chapter 3, the elegant hermite - cosh - gaussian beams as another special case in hermite - sinusodiol - gaussian family is introduced and its propagation properties through a first - order optical abcd system are investigated. an analytical solution of the elegant herimite - cosh - gaussian beam propagating through a first - order abcd system is derived, and correspondingly, the closed - form m2 - factor, the beam width, the curvature radius and the power in bucket are presented analytically. the numerical investigations are carried out and show that the m2 - factor of elegant hermite - cosh - gaussian beam is greater than that of elegant hermite - gaussian beams and less than that of hermite - gaussian beams approximately

    本文得到的主要結果可歸納為：首次用強度矩的方法研究了hermite - cosh - gaussia （ hchg ）光束，得到了hchg光束的束寬、曲率半徑、 m ~ 2因子、瑞利距離等的解析表達式；用陡峭度和pib參數去衡量hchg光束的光束質量，找到了hchg光束在傳輸過程中影響光束質量的因素並得到了變化規律；證明了hchg光束在傳輸過程中的重心和對稱性都會得到保持。
  4. In this paper, we mainly discuss multilayer mirrors for x - ray solar telescope operating at 17. 1nm wavelength. the diameter of primary mirror for telescope is 130 millimeters and secondary mirror is 66mm. especially, we will engage in controllation of uniformity of period thickness

    本文主要針對工作波長為17 . 1nm的x射線空間望遠鏡中的主鏡與次鏡的膜厚分佈均勻性進行控制，其中主鏡直徑為130mm ，曲率半徑為7 . 5m 。
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