may nd 中文意思是什麼

may nd 解釋

  • may : n 梅〈姓氏，女子名， Mary 的昵稱〉。n 1 五月。2 〈英國〉五朔節的慶祝活動。 3 〈詩〉青春。4 〈m 〉...
  • nd : Nd ＝【化學】 neodymium 釹。
  1. According to the sr - nd isotopic characteristics of peridotite xenoliths and their host basalts, it indicates that xenoliths in hannuoba, puning area may represent source area of the host basalt because of the xenoliths and host rocks being in the same plot ; however, the xenoliths is not directly related to their host rocks of the others area for the xenoliths plot out of the range of their host basaltic rocks. thermal dynamics calculation shows that the peridotite xenoliths are formed in the condition of pressure of 9. 45 - 25kb and temperature of 945 - 1281

    橄欖巖包體及其寄主玄武巖的sr - nd同位素研究表明，漢諾壩與普寧地區部分包體樣品投點落在其寄主玄武巖nd和sr同位素的分佈范圍內，表明橄欖巖包體代表了寄主玄武巖的源區，而其它大部分地區的包體其寄主玄武巖范圍之外，表明寄主玄武巖和橄欖巖包體無成因聯系，橄欖巖包體只是偶然包體。
  2. Thus, they might be derived from a back - arc basin with an archipelagic system in paleo - tethys, instead of a large ocean basin. the isotopic geochemistry shows that the jinshajiang ophiolitic melange has higher e nd ( t ) values ( + 7. 42 - + 5. 44 ), suggesting that it may be derived from a lree depleted mantle source without significant contamination by the continental crust, but affected slightly by a fluid from a subducted ocean crust

    同位素地球化學研究表明，金沙江蛇綠混雜巖具有較高的_ （ nd ） （ t ）值（ + 7 . 42 + 5 . 44 ）暗示蛇綠巖來源於lree長期較虧損的地幔源，演化過程中沒有受到陸源物質的明顯混染，而主要受到少量俯沖洋殼析出流體的影響。
  3. In this paper, i will present some algorithms of polyhedral visual hull reconstruction : ( 1 ) polyhedral v isual h ull generation a igorithm b ased one dge - pool - searching, which constrains the 3 - d intersections into the 2 - d planes intersection via the epipolar theory to reduce the complexity a nd c an r educe t he t imes f or c ones t o b e p rejected o nto t he i mage p lanes, i n which we induced the index list to every points on the surface of object, and connected the related points to get sub polygons on surface and in turn get the mesh model, we replace triangulation process of disordered points cloud by edge - pool searching. ; ( 2 ) reconstruction based on degenerated - polygon - intersection, which have the following improvements on traditional bull intersection : using degenerated polygon to orga nize intersected area on cone face, which may be discontinuous ; a fast intersection algorithm of polygons on the cone face based on degenerated polygons, which is consistent between the continuous polygons and the discontinuous ones. the intersection of degenerated polygons is similar to the convergence of two ordered lists, which is comparably simple to the bull operation ; ( 3 ) reconstruction algorithm based on ray - tracing, in which all the rays that run through the vertex on silhouette of object will intersect with all the cones correspondent to other silhouette, and we have to calculate the intersection of all such line segments, the endpoints of which are considered to lie on the surface of object and we will get the point cloud on the surface of object

    同時利用共極線原理把三維計算投影到二維平面以降低求交計算的復雜度，該演算法可以減少光錐向圖像平面投影計算的次數，以邊池搜索取代散亂點集上進行的三角剖分； （ 2 ）基於退化多邊形求交的多面體可見殼模型重構，系統引入退化多邊形的概念，把錐體平面的交集中不連通的部分用一個退化多邊形來表示，並引入了新的基於退化多邊形的求交演算法，與傳統多面體可見殼重構相比，該演算法有以下幾點創新：在圖像平面以退化多邊形組織投影錐體和物體輪廓的交集，把任意錐面與物體輪廓的交集歸一到一個退化多邊形；基於退化多邊形的二維平面上多邊形快速相交演算法，該演算法在一定程度上就是兩個有序鏈表的合併，大大簡化了先前的布爾求交計算； （ 3 ）基於光線跟蹤的演算法，該演算法中所有通過輪廓頂點的光線和對應其它圖像輪廓的光錐進行求交計算，最後得到每次求交計算得到線段的交集，該線段的頂點就認為是物體表面點，從而得到物體表面的點雲。
  4. Abstract : the experiment about ignition property of solid e nergetic materials was done by laser which was generated by big powerful laser i nstrument - nd : yag. the influence on the ignition property of difference enery, puls e width and different frequency of laser instrument and different webs of the pr opellant. was studied and analyzed which may be used to do further researches for ignition

    文摘:使用大功率nd : yag激光器產生的激光，對固體含能材料的激光點火性能進行了實驗研究，分析了不同能量、脈沖寬度、調制頻率及藥粒尺寸等因素對點火特性的影響，為激光點傳火系統的研製提供了實驗依據。
  5. Bea releases performance of china operations for 2002 ( 2 nd june, 2003 ) bea announces results of " ensurpro " lucky draw ( 29 th may, 2003 )

    東亞銀行公布國內業務2002年業績（ 2003年6月2日）
  6. With the development of computer 3d graphics technology, designers can express their intensions more directly a nd thoroughly by 3d body models. advanced cad tasks such as checkage of assembly and interference, the analysis by fem and analysis of movements etc. may be carried on based on 3d models

    隨著計算機三維圖形學技術的發展，建立的實體模型能夠更直觀、全面地反映設計意圖，並且在此基礎上還可以進行裝配、干涉檢查、有限元分析、運動分析等高級計算機輔助設計工作。
  7. Thus, president stenhammar has also appointed area coordinators and zone coordinators who are available to help you and answer any questions you may have ( you will ? nd them listed on the following sheets

    此外，施當恆社長已指派區域協調人及地帶協調人，他們將隨時協助您，並回答您可能提出的問題。
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