concave surface 中文意思是什麼

concave surface 解釋
葉片凹面
  • concave : adj 凹的，凹面的 （opp convex）。n 凹，凹線，凹面（物）。 the （spherical） concave 〈詩〉蒼穹。v...
  • surface : n 1 表面；地面；水面；廣場，空地。2 外觀，外表，皮毛。3 【幾】面；切口；【航空】翼面。adj 表面的...
  1. Check the state of the straw separated : if the straw is seriously broken, the cylinder and the concave must be adjusted to lessen excessive threshing ; if the straw is complete and unbroken, the quantity of wind shall be increased to make the chaff on the sieve surface the state of floating or the opening of the chaffer shall be slightly increased to make the grain fall through the sieve

    檢查單個稻草的狀況：如果稻草嚴重受損，必須調節滾筒和凹面以減小脫粒過猛；如果稻草完好無損，則必須增大風量使得谷篩表面的廢渣飄浮起來，或者慢慢加大谷篩孔，使得穀物穿過谷篩。
  2. We fabricated a large computer - generated holography on a concave lens surface to test the convex secondary mirrors surface

    在凹透鏡表面上製作出了用於凸非球面檢測的曲面全息圖。
  3. We demonstrate experimentally the technique to fabricate large does in the thick film on a concave lens ( mirrors ) surface with precise alignment by using the strategy of exposure twice

    採用兩次曝光的方法在凹透鏡表面上厚光刻膠中製作衍射光學元件。
  4. This paper referred to the massive domestic and foreign technical material, elaborated in the sheet forming value simulation theory essential technology in detail, points out when analysis sheet forming question should use the big distortion ball plasticity fem and introduce the application characteristic and the function summarizes of the sheet forming simulation software dynaform. secondly, analyzed the cover forming characteristic, simultaneously introduced the influence cover forming factor in detail : such as ramming direction, the craft addendum surface and the material pressing surface, the radius of convex - concave mold, draw bead, pressure strength, blank size and craft margin and so on. and simulates many typical automobiles cover panel with software : such lateral board, back taillight pedestal and storage cover

    其次，分析了覆蓋件成形的特點和要求，同時詳細介紹了影響覆蓋件成形的因素如沖壓方向、工藝補充面和壓料面、凸凹模圓角、拉延筋、壓邊力、坯料尺寸和工藝切口等，並用數值模擬軟體對多個典型的汽車覆蓋件汽車后側圍板、后燈座以及轎車后備箱蓋的沖壓成形情況進行模擬，用模擬結果優化拉延工藝方案，比較了內覆蓋件和外覆蓋件在成形特點和要求的一些異同點，以及常見的起皺、拉裂和回彈、成形不足等缺陷的產生機理和相應對策，重點介紹工藝補充面和壓料面的設計及優化方法，因為拉延是沖壓工藝的關鍵工序，而工藝補充面和壓料面的設計是拉延工序的關鍵，對消除缺陷至關重要。
  5. An indented or concave surface or area

    凹陷，窪地凹的表面或地區
  6. Bloom, having the advantage of ten seconds at the initiation ad taking, from the concave surface of a spoon along the handle of which a steady flow of heat was conducted, three sips to his opponent s one, six to two, nine to three

    他比客人早喝了十秒鐘，從不斷地傳熱的調羹柄下端的凹面啜可可的速度是：對方每啜一口，他啜三口對方每啜兩口，他啜六口對方每啜三口，他就啜九口。
  7. 2. sperm ultrastructure the sperm is nonflagellated and composed of a main body in which including nucleus n apical cap and a little cytoplasm and a single spike extending from the convex surface of the apical cap, which consists of about twenty radial fibrillae on which exhibiting periodic cross - striations. the concave surface of the apical cap surrounds the little cytoplasm which is highly condensed and has n ' t any organella and sperm nucleus, which is uncondensed and composed of filamentous materials and many membrane - bound vesicles

    外形呈圖釘樣，由主體部和棘突組成，主體部包括帽狀體、細胞質帶和精核。帽狀體由約20根輻射狀排列的纖絲組成，纖絲具橫紋。其凸面延伸成棘突，棘突內纖絲是帽狀體內纖絲的延續，亦具橫紋。
  8. Molded grating is composed of fiberglass roving combined with a thermosetting resin series designed for different environments and applications smg series standard grating has a concave profile on the upper surface for skid resistance, grit tops are available upon request

    採用玻璃鋼模塑成型工藝，在大型金屬模具上製作，製品帶有許多對稱的方形或矩形網格的板材，稱為玻璃鋼模塑格柵， smg為標準英制模塑格柵系列，按客戶要求上表面帶月牙凹型或石英砂防滑，也可以做成表面封閉。
  9. Dried at the temperature, the film has surface with convex and concave microstructure, its hydrophobicity and surface roughness can be improved evidently by adding the bead - forming agent. ( 3 ) the self - cleaning and heat - insulated building coating with excellent hydrophobic property and gas - permeability was preparaed by using the hydrophobic additive, modified sepiolite and modified expanded pearlite

    （ 3 ）應用疏水添加劑、改性海泡石、膨脹珍珠巖能夠制得自清潔隔熱功能塗覆材料；制備的疏水添加劑和經提純、疏水改性后的海泡石和膨脹珍珠巖，對乳膠塗料的流變性能、穩定性能以及塗膜的疏水性能、對比率和其他常規性能無不良影響。
  10. Thus wear and friction are reduced. 3 ) in the course of friction the nanometer cacos particles and cao particles can fill up the concave of the surface and even sink into substrate and fill in the worn position promptly

    （ 3 ）摩擦過程中納米碳酸鈣、納米氧化鈣粒子能填平摩擦表面低凹處甚至陷入基體中，並可及時填補損傷部位，具有自修復功能，使摩擦表面始終處于較為平整的狀態。
  11. Dimple - a concave depression found on the surface of a wafer that is visible to the eye under the correct lighting conditions

    表面起伏-在合通下線光的適過肉眼可以發現的晶圓片表面凹陷。
  12. It analyses the tool path of intersectant profile and transition of surface, and discusses the method for identifying the edge of concave region, illustrates the example of the machining of shallow surface

    對曲面交線和曲面過渡區域的刀具軌跡進行了理論分析，探討了曲面內凹區域補加工中邊界的識別方法，並提出了淺平面和陡斜面加工應用實例。
  13. The high similarity in shapes and large overlapping areas of corresponded contours on adjacent cross - sectional are main conditions in reconstructing surface correctly. in accordance with the disadvantage of blurring caused by traditional gray - level interpolation methods, this dissertation introduces a method to interpolate 3d images based on point matching approach to get 3d isotropy volume data. with respect to non - similar shapes or no superposition of corresponded contours on adjacent slices and concave contours, this dissertation presents a method for shape - based interpolation based on nonuniform scale bounding box

    相鄰斷層上對應輪廓區域的形狀相似和重疊部分大是保證重建表面正確性的重要條件，針對傳統灰度插值容易引起模糊邊界的缺點，本文採用基於對應點匹配的方法進行灰度插值，以獲得各向同性的三維數據；針對相鄰斷層間對應輪廓的形狀不相似，位置不重合和有凹輪廓線的情況，提出一種基於包圍盒非均勻比例放縮的形狀插值方法。
  14. The utility model discloses a luminescent computer keyboard key, which comprises : a key body ; a concave groove, which is arranged on the top of the key body and is used for embedding phosphor powder display character layer under night light and transparent protection surface layer ; after embedding into said groove, the surface has a transparent protection layer with thickness leveled as top face of the key body

    本實用新型公開了一種夜光計算機鍵盤按鍵，該按鍵結構包括：鍵體；鍵體頂面設置的供鑲嵌熒光粉夜光顯示字元層及透明保護表層的凹槽；具有鑲入所述凹槽后，其表面與鍵體頂面平齊的厚度的透明保護層。
  15. Application : grind the surface of wood and metal. lap the hole and surface of work - piece. gind and lap flexible contoured suface, especially concave and convex surface profiles

    用途：應用於木材和金屬的表面拋光、工件的內孔、外壁的精磨、用於彎形物的曲面、尤其是凹凸表面和側面的研磨、拋光。適用於鑄鐵、木材、鋼材、有色金屬、塑料。
  16. Aiming at the existed problems in reverse engineering techniques concerning triangulation method for scattered data points, display technique of three dimension model based on mesh simplification, and redesign technique for re - constructed surface etc., this paper studies and proposes the relevant solving schemes, key algorithms and realizing technologies. the chief contributions acquired by this paper include : ( 1 ) an effective 3d triangulation algorithm for scattered data points is put forward. this algorithm solves the problem that data points must be partitioned for multi - projection realized by traditional 2d triangulation methods, and can also triangulate the scattered data points of trimmed surface and concave boundary surface

    本文工作針對散亂點集的三角網格劃分及優化、基於網格簡化的真實感模型顯示，以及重構曲面再設計等反求工程的關鍵技術中還存在的諸多問題，提出了相應的解決方案，並對關鍵演算法和實現技術進行了深入研究，論文的主要成果包括： （ 1 ）提出了一種有效的散亂數據點集的3d空間直接三角網格劃分演算法。
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