正四面體 的英文怎麼說

中文拼音 [zhēngsìmiàntǐ]
正四面體 英文
positive tetrahedron
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 四 : Ⅰ數詞（三加一后所得） four Ⅱ名詞1 [音樂] （中國民族音樂音階上的一級） a note of the scale in gong...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 體 : 體構詞成分。
  1. In the great anti - japanese national liberation war, china ' s international image gets an exaltation and china ' s great - nation station gets a complete remoulding, shown in the following aspects : the outstanding contribution of the chinese theatre and the huge sacrifice of the chinese nation are of crucial importance to the exaltation of china ' s international position ; the abrogation of the unequal treaties makes china become a member with equal rights of the international community, and china ' s great - nation station begins to take a favorable turn ; the ascendance as the " top four " in the world fully represents the improvement of china ' s international position, symbolizing the establishment of china ' s great - nation station ; in addition, both the communist party of china and the gmd make an great contribution on the exaltation of the chinese international position

    摘要在偉大的抗日民族解放戰爭中，中國的國際形象得到提高、大國地位得到全面重塑，具體表現在：中國戰場的突出貢獻和中華民族的巨大犧牲為中國大國地位的提高奠定了基礎；不平等條約的廢除使中國成為國際社會的平等一員，中國的大國地位開始轉機；躋身世界「四強」是中國國際地位提高的集中表現，標志著中國大國地位的正式確立；國共兩黨都為中國國際地位的提高做出了重大的貢獻。
  2. This form of construction is strong and has the additional advantage of enclosing a given volume with the least possible use of materials. geodesic domes are actually derived from regular polyhedra. those that are derived from the dodecahedron and the icosahedron have joints where 5 distinct triangles meet

    由正十二或正二十面所建而成的短程線圓頂特色是當中的一些接駁點由五個三角形組成而由正八面體所建立的圓頂則可以分割成四分之一或四分之三個。
  3. Then following reality constituent of engine and connecting component interface, a nonlinear signal cylinder engine model has been created, though fire interval and fire order, a control - oriented four cylinders engine is build. following dynamometer is seen as load, performance of engine is simulated and researched under the condition of constant torque and speed, validation of the math and simulation model have been confirmed by comparison result between simulation with test result of engine performance simulation software dyno

    按照發動機的實際組成，根據各部件的介面類型連接模型庫中的部件，建立了單缸發動機非線性模型，在此基礎上，依據發動機實際發火間隔和順序，建立了面向控制的四缸汽油機模型，並以測功器為負載，通過恆轉矩和恆轉速方式進行了發動機性能模擬和研究，模擬結果和發動機動力性能模擬軟體dyno測試結果的對比驗證了數學模型和模擬模型的正確性。
  4. By making some assumptions, collision frequency were presented. then the the flocculation kinetics model was established through population balance equation. comparison of experimental data and modeling results indicate that there are the same trend between the two. so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters. the tem and sem were used to obsever floes in the study of floe structure. the flocculation was divided as flocculi, floc and floe aggregate. the floes structure model was established by assumption that particles position in floe accords with tetrahedron. the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent

    最後，本文還對絮凝動力學和絮體結構進行了研究，在前人研究的基礎上，針對高分子絮凝黃河泥沙，對絮凝過程作了一些符合試驗條件的假設，建立了顆粒碰撞頻率表達式，應用了顆粒數量平衡方程，從而建立了絮凝過程的動力學生長模型，模型計算結果與試驗數據對比表明，二者趨勢一致，在沒有使用經驗參數的情況下基本上能夠描述黃河泥沙絮凝過程中絮體數量和尺寸分佈的變化過程；對絮體結構的研究中，應用掃描電子顯微鏡和透射電子顯微鏡對絮體進行了觀察，將絮體分為絮粒、絮團和絮網三個不同的生長階段，通過假設顆粒結合位置符西安建築科技大學博士學位論文合正四面體，建立了絮體結構模型，計算得到的模型絮體分形維數基本與試驗中的實際絮體相符，在一定程度上能夠反映高分子絮凝黃河泥沙生成的絮體結構。
  5. If the exam is this problem, tetrahedral should be inscribing on four sides. otherwise imponderable

    假如考試是這道題的話，四面體應該是正四面題。否則無法計算。
  6. This article contains three parts, namely, preface, body and conclusion. the preface mainly introduces the discussing subject and writing purposes of this article. body is divided into four parts : from the beginning of actio in rem and actio in personam in roman law, the first part detailedly inspects and analyses the formation process of the dual rights system in historical research methods ; the second part discusses the theoretical framework of the dual rights structure from the aspect of system ; the third part mainly analyses the middle rights and the integration of real rights and creditor ’ s rights and the reasons for the emergence of these phenomena, pointing out that the emergence of these phenomena is unevitable in civil law system which ajusts social relationship with systematic code, and how

    正文分為四個部分:第一部分採用歷史研究的方法，從羅馬法上的對人之訴和對物之訴出發，對物債二分體系的形成過程進行了細致的考察和分析;第二部分從體系化的角度討論了物債二分體系的理論構成，對其理論架構進行了總體上的研究;第三部分著重分析了物權與債權的融合和中間狀態及其出現這些現象的原因，指出在運用體系化的方法調整社會關系的過程中，出現物權和債權中間狀態的權利形態是不可避免的現象，並對如何正確看待這些問題進行了論證;第四部分在前文論述的基礎上，對我國一些學者提出的制定財產法和設立財產法總則的觀點的可行性進行了分析，指出無論是從我國大陸法系的傳統還是從技術層面來看，制定財產法或設立財產法總則都是不可行的。
  7. Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece

    將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義
  8. Normal curves on the surface of a

    四面體表面上的正則曲線
  9. In west developed countries, the national credit management system played a very important role in normalizing the credit trade. it is made up of opening credit rating data and the development of credit management industry, establishing and enforcing of credit management law system, supervising and managing over credit trade and credit management industry by government, developing of the education and research on credit management

    發達國家信用管理體系在規范信用交易方面發揮了非常重要的作用，大概由以下幾個部分組成：第一，徵信數據的開放和信用管理行業的發展；第二，信用管理法律體系的建立和執行；第三，政府對信用交易和信用管理行業的監督和管理，包括信用管理民間機構的建立；第四，信用管理正規教育和研究的發展。
  10. When sno2 wt % was controlled for 10 %, the square resistance of sn - in2o3 was minimum. through the characterization of in2o3 / sno2 nano powders, some conclusions were drawn : sno2 nano powder is rutile structure, and in2o3 and sn - in2o3 nano powders are cubic structure. in2o3 / sno2 nano powders were well dispersing with spherical uniform grain, and the mean grain was 4 - 50 nm

    通過對inzo3 / snoz納米粉體表徵，得出inzo3 / snoz納米粒子多呈球形、顆粒均勻、分散性良好、組分均勻、純度較高、平均粒徑在4一50lun左右、比表面積達67一156mz / g ; snoz納米粉為正四面體金紅石結構， inzo3和sn一inzo3納米粉為體心立方結構。
  11. Furthermore, its response changed little even after the sensor was soaked in water for 30 min. four kinds of multi - layers nanocomposite humidity sensitive films, including sodium polystyrenesulfonate / poly ( diallyldimethylammonium chloride ) ( napss / pdda ), sodium polystyrenesulfonate / poly4 - vinylpyridine quaternized with butyl bromide ( nbubr - p4vp ), sodium polysryrenesulfonate / zinc oxide ( napss / zno ) and sodium poly ( acrylic acid ) / zinc oxide ( paana / zno ), have been prepared by means of self - assembly

    用靜電吸引自組裝法制備了聚苯乙烯磺酸鈉（ napss ）聚二烯丙基二甲基氯化銨（ pdda ） 、 napss溴代正丁烷季胺化聚4 -乙烯吡啶（ nbubrp4vp ） 、聚苯乙浙江大學碩士學位論文摘要烯磷酸鈉則apss們化鋅面ox聚丙烯酸鈉p句zno四個體系的自組裝納米復合濕敏膜及濕敏元件。
  12. In this paper, we study and analysis the base distribution in human dna sequences. on the basis of the distribution sphere whose radius equal to 1 / 4 by zhang et al. expounded, with the method of plane mapping figure studying 6000 human dna sequences, and according to the figure of sierpinski gasket ' s patch and the brillouin zones of the face - centered cube, we obtain two new distribution figures, one is the frustum - octahedron, another is the regular - octahedron

    我們在zhangetal .提出的人類dna序列的堿基分佈為半徑是1 / 4球分佈的基礎上，用平面投影圖的方法研究和分析了6000組人類dna序列的數據，並且根據塞爾賓斯基鋪墊的補形和面心立方的布里淵區圖形提出了兩種新的分布圖，一種是正八面體，另一種是截角八面體（十四面體） 。
  13. Through the study and analysis conclude as follows : in human dna sequences, if the distinction of the number of the four bases is very small, they can distribute in a sphere whose radius equal to 1 / 4 ; if the distinction of them is comparative large, they can distribute between the sphere and the frustum - octahedron ; if one is 0 in them, they can distribute between the frustum - octahedron and regular - octahedron ; if the distinction of them is especial large, they may distribute in the outer of the regular - octahedron

    通過研究和分析得到結論為：在人類dna序列中，如果四個堿基的數目相差很小時，它們可能分佈在半徑為1 / 4的球內；如果相差比較大時，它們可能分佈在這個球和截角八面體之間；如果在四個堿基數目中有一個為零時，那麼它們有可能分佈在截角八面體和正八面體之間；如果相差的特別大，甚至有可能落在那個正八面體的外部。
  14. We also derive the expression of the signal obtained from random position by the magnetic field sensor. then we construct five - dimension nonlinear equation group for the signal obtained by the magnetic field sensor and solve them, so that we can realize 3d localizing and navigation for endoscope probe

    我們根據電磁場理論推導出位於正四面體六條棱上的差分磁偶極子在空間任意點的場強表達式及探頭感應磁場信號的原理，然後建立起五元非線性方程組進行定位求解。
  15. Using 4d coordinate to express the convert matrix of perspective, it is predigested to calculate z coordinate through changing to one. the coordinates of pixels in screen correspond with the z coordinate of object surface are modified by adding the numbers of buffer. the method of 3d perspective using directx buffer is improved

    使用四維坐標來表示物體的透視變換矩陣，通過對該矩陣進行歸一化處理，簡化了z坐標的計算；通過增加幀緩沖區的數量，修正了物體表面z坐標在屏幕上對應點的坐標值，對利用directx的緩沖區進行物體三維透視的方法進行了改進，提高了透視精度。
  16. Taking the questionnaire result of the network behaviors of university students in wuhan area as the main foundation, this paper analyzes on the features of university students ' network behaviors, points out that the forth media has influenced widely each aspect of university students ' lives, and advances some corresponding suggestions

    以武漢地區大學生網路行為調查問卷結果為主要依據，分析了大學生網路行為的特點，指出第四媒體正在廣泛影響大學生生活的各個方面，並提出了相應的建議。
  17. As its abundance is rare, it is very valuable. it appears in native usually as colourless precious stone, and is useful for cutting things and in jewellery. each atom in diamond is bonded to four others in a tetrahedral arrangement which gives the structure considerable intrinsic strength and hardness

    金剛石是非常罕有且珍貴的碳，在金剛石中，每個碳原子都以正四面體的排列方式與另外三個碳原子連接，因此破壞這種化學鍵需要極大的能量，因此金剛石十分堅硬，主要用作金屬及珠寶切割的用途。
  18. The location of our company is tsing yi island which is seagirt and scenic, it is very close to the container seaport, 20 minutes drive to the airport, and 40 minutes drive to mainland china. furthermore, tsing yi is located as a junction point of allthe sea, land & air transportation for hong kong

    公司地處四面環海、風景美麗的青衣島，距機場20分鐘，距深圳40分鐘，貨櫃碼頭近在咫尺，集海、陸、空交通樞紐；青馬大橋，汀九懸索橋，正在興建的從蛇口到天水圍的港深西部跨海大橋，青衣到西九龍的跨海大橋，及正在籌建的港珠澳大橋，將使青衣島成為香港與大陸及全世界連通的立體交通交匯點。
  19. These conclusions are expounded on the basis of the peculiarity of cube and regular tetrahedron of dna sequences, so they are rationalization, and they will be very useful in the study of the classification and the evolution of organisms

    它們都是根據dna序列的立方體和正四面體的性質而提出來的，有一定的合理性。本文的結論對人們研究生物體的分類和進化有著很重要的作用。
  20. Macro concern lies on the discrepancy between chinese and indian system and policy in science and technology and international intercourse and cooperation as well as the positive and negative effect caused by the discrepancy, micro concern lies on the development of software industry. then follows an analysis on the similarities and differences in respective human resource, software technology garden, the protection of intellectual properties and polices in order to offer suggestions on the adjustion and development of chinese software industry

    宏觀上，重點關注中印兩國科技體制、科技政策以及國際交流與合作三方面的差異及其帶來的正負面影響；微觀層面，則以軟體業的發展為重點剖析對象，深入分析兩國軟體業在人才、軟體技術園、知識產權保護和政策等四個方面的某些異同，並為今後中國軟體業的調整與發展提供對策建議。
分享友人
分享到 Line

分享到臉書