convex concave 中文意思是什麼

convex concave 解釋
凹凸度
  • convex : adj. 中凸的，凸圓的，凸面的。n. 凸狀，凸面，凸圓體。 convex glasses 遠視眼鏡，老花眼鏡。adv. -ly
  • concave : adj 凹的，凹面的 （opp convex）。n 凹，凹線，凹面（物）。 the （spherical） concave 〈詩〉蒼穹。v...
  1. Our " standard " product line includes cylindrical lenses, lenses, plano - convex cylindrical lenses, plano - concave cylindrical lenses, spherical lenses, aspherical lenses, prism, filter, window, achromatic lenses and reflector etc

    我們的生產包括:柱面鏡球面鏡非球面鏡棱鏡平鏡膠合鏡透鏡反射鏡濾光片偏光鏡等。
  2. Alternative characterization of concave and convex functions which is sometimes useful.

    對于凹函數和凸函數還有一個替補的表徵，有時它是有用的。
  3. Located along the northern silk route between central asia and metropolitan china proper, and serving as a meeting ground of " western regions " ( xiyu ) and indigenous cultural influences, dunhuang provides a continuous record of datable monuments, from the fifth century onward, showing the importation of the indian chiaroscuro style, known in chinese as aotu hua, " concave - and - convex painting, " and its eventual transformation into the indigenous chinese pictorial idiom

    摘要作為絲綢之路上一個西域和本土文化的匯合地點，敦煌藝術提供了5世紀以來西域「明暗法」風格即文獻上所謂「凹凸畫」以及這種畫法最後變成中國本土繪畫筆墨風格的一個可確定時代的連續記錄。
  4. This article takes the lagrange equation as the principle, establishes mathematics modeling to the inertia brake vibration when it brakes, then simulates it with matlab. this paper educed the relation equations between, which are the inertia brake ' s friction coefficient of the brake ring and the friction disk, the mean radius, the braking force, rotation inertia of the driving top and the spline shaft, spiral climbing angle of the brake ' s concave - convex helicoid, the mean effort radius of the concave - convex helicoid, elasticity coefficient of the spring, quality of the driving top and the spline shaft, rotations inertia of the brake ' s rotation part besides the driving top and the spline shaft, suppresses sleeve. provides the theory basis for the inertia brake structure optimization

    本文以拉格朗日方程為理論基礎，對慣性制動器在制動時的振動進行數學建模，然後用matlab對其進行模擬，得出了慣性制動器在制動時振動角頻率分別與制動環和摩擦片之間的摩擦系數、制動力的平均半徑、主動頂和花鍵軸的轉動慣量、慣性制動器的凹凸螺旋面的螺旋升角、凹凸螺旋面平均作用力的半徑、彈簧的彈性系數、主動頂和花鍵軸的質量、慣性制動器除主動頂和花鍵軸外其他部分的轉動慣量和、頂壓套的質量等慣性制動器各零部件的物理參數之間的關系，為慣性制動器的結構優化提供了理論依據。
  5. In adults its contour may be straight, slightly concave or slightly convex.

    成人肺其形狀可以是直的，輕微凹下或輕度突出。
  6. Just as a double convex lens enlarges, so a double concave lens reduces

    正象雙凸透鏡可以放大那樣，雙凹透鏡也可以縮小。
  7. 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。
  8. Unlike concave mirrors, the convex kind produces right - side - up virtual images, smaller than the original object, which cannot be projected onto a canvas

    與凹面鏡相反，凸面鏡呈現的虛像不會顛倒，影像比原來的物體要小，且無法投射到畫布上。
  9. Jointing products. mastics for bonding of convex or concave tiles. specifications

    填接縫用品.凸凹磁磚粘接膠合.規范
  10. Hockney surmises, however, that this convex mirror could be turned around and used as a concave projection mirror : “ if you were to reverse the silvering, and then turn it round, this would be all the optical equipment you would need for the meticulous and natural - looking detail in the picture

    但霍克尼的猜測是，把這個凸面鏡前後反轉過來，便能當成可投射的凹面鏡來用：如果你把銀塗在凸面鏡的反面，並將它反轉過來，就變成能做出精細自然畫面的道具了。
  11. 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。
  12. Exact travelling wave solutions and concave or convex peaked and smooth soliton solutions of camassa - holm equation

    方程的精確行波解及其凹凸尖峰與光滑孤立子解
  13. This machine is a kind of special equipment used for thermo - printing and creasing various products, such as cardboard, leather and plastic etc. it is suitable for thermo - printing various paper products with electrochemical aluminum and also used as a creasing and cutting machine for mould cutting and creasing cardboard cases and boxes. concave - convex thermo - printing of various high - grade and fine printed products can also be conducted on this machine for obtaining stereoscopic exquisite and beautiful packing and decorating products. the machine is controlled

    本機是燙壓各種紙板皮革塑料等製品的專用設備。適用於電化鋁燙印到各種紙張上，又可模切壓痕各種紙箱紙盒。各種高級精細的印刷品均可在本機上進行燙印，以獲得富有立體感，精緻美觀的包裝，裝潢製品。
  14. Convex and concave milling cutters technical specifications

    凸凹半圓銑刀技術條件
  15. Modification and match of big orthogonal convex or concave milling cutter ' s profile

    大前角圓弧銑刀齒形修正擬合
  16. Convex and concave milling cutters - part 2 : the types and dimensions for convex milling cutters

    凸半圓銑刀的型式和尺寸
  17. Convex and concave milling cutters - part 1 : the types and dimensions for concave milling cutters

    凹半圓銑刀的型式和尺寸
  18. As a new type gear transmission, double circular arc profile bevel gearing carries out its transmission by means of meshing between convex - concave tooth profile in both of the direction of tooth trace and the direction of tooth depth, so it has advantage of high load capacity, long service life, easy forming hydrodynamic oil film between teeth as well as high quality of running - in etc. therefore, more attention has been paid to its application and research in recent years

    作為一種新型齒輪傳動方式，雙圓弧弧齒錐齒輪傳動不論在齒線方向、還是在齒高方向，均為凸、凹齒廓相嚙合，因而它比一般的弧齒錐齒輪傳動的承載能力高，使用壽命長；並且在嚙合過程中兩齒面間容易形成潤滑油膜，具有良好的跑合性能，所以對它的應用和研究日益受到人們的重視。
  19. 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。
  20. Convex - concave shape : unique designed of convex - concave shape, which can strengthen and expand the heated measure. promote to absorb the light and heat energy. increase the radiating energy

    在省油器表面形成許多凹凸面：使表面受熱面積加大，促進吸收光能及熱能，增加紅外線放射能量。
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