正四面 的英文怎麼說

中文拼音 [zhēngsìmiàn]
正四面 英文
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...
  1. 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。
  2. 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。
  3. At the middle of each four walls stands a gate tower ; the meridian gate in the south, the godly prowess gate in the north, the donghua gate in the east, the xihua gate in the west, and at each of the four comers stands a tower

    四面正中設城門四座，上建城門樓閣，南為午門，北為神午門東為東華門西為西華門，城垣外環繞寬米深.米的
  4. For hoods with shutters in four sides, the results show : 1 ) the hoods positively placed boards are called hoods used for venting airflow ; hoods negatively placed boards are called hoods used for leading airflow ; 2 ) among the hoods used for venting airflow, the most effective hoods should have positive declining angle value of 30, the ratio 4 of areas between the four windward faces and the gular section ( fy / fj = 4 ), the value of b range from 70 mm to 120 mm and the value of b / h range from 0. 5 to 0. 6 ; 3 ) the most effective hoods should have negative declining angle value of 60, the ratio 4 of areas between the four windward faces and the gular section ( fy / fj = 4 ), the value of b range from 100 mm to 170 mm ( the optimum value is 120 mm ) and the value of b / h range from 1. 4 to 2. 2 ( the optimum value is 2. 0 )

    對於四面設百葉型風帽，計算表明: l ）正裝傾斜擋板的百葉型風帽可認為是排風型風帽，倒裝擋板傾斜的百葉型風帽可認為是進風型風帽; 2 ）排風型風帽中，擋板正裝30 」 、風帽四個迎風面的有效面積fy和風管凈斷面積fj的比值（ fy腸）為4 、擋板寬度b在70inln到120inln之間、板間距比值隴在0 . 5到0 . 6的百葉型風帽排風效果最好; 3 ）進風型風帽中，擋板倒裝裝60 「 、風帽四個迎風面的有效面積和風管凈斷面積的比值（ fy例）為4 、擋板寬度b在100咖到170mm之間（ 120mm為最佳） 、板間距比值隴在1 . 4到2 . 0的進風型風帽（ b爪= 2 . 0為最佳）的百葉型風帽進效果最好。
  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. People were converging on the cottage from all directions, as lucy mercer and madame skoumatoff were exploding out of it.

    正當露西默塞爾和肖馬托夫夫人急得暴跳如雷的時候，人們從四面八方匯集到這座別墅。
  7. Normal curves on the surface of a

    四面體表面上的正則曲線
  8. The house is tiny, and cramped inside ; there is barely room for the gun emplacements that face every which way from the second storey, pointing out over sandbags which are being replaced by the concrete blocks

    房屋很小，內里狹仄；僅僅只有安放槍炮的空間，這些槍炮架在二樓正用混凝土砌塊替換的沙袋上，對外指向四面八方。
  9. To the credit of the traditional good sense of the paris “ cit ” be it said that the majority of the spectators directed their steps towards the bonfire, which was entirely seasonable, or the mystery, which was to be performed under roof and cover in the great hall of the palais de justice, and were unanimous in leaving the poor scantily decked may - pole to shiver alone under the january sky in the cemetery of the chapelle de braque

    不過，巴黎愛湊熱鬧的游閑之輩那種自古就有的見識真堪稱贊，群眾中絕大多數人都去看焰火，因為這正合時節；或者去觀看聖跡劇，因為是在司法宮大廳里演出，上有嚴嚴實實的屋頂，四面有緊閉的門窗；而那棵可憐的五月樹，花兒稀稀拉拉，看熱鬧的人都不願一顧，任憑它在一月寒天下，孤零零地在布拉克小教堂的墓地上顫抖。
  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. Thanked us, what ? eager questions were heard on all sides, and the whole moving mass began to press back on itself the foremost, it seemed, had halted, and a rumour passed through that the order had been given to halt

    是不是站著不動呢？是不是表示謝意？ 」從四面傳來貪婪地問長問短的話語聲，正在行走的人群互相擠擠插插看起來，先頭部隊停止前進了，停止前進的風聞傳開了。
  12. The first day shift, converging from all parts of the city, was arriving in a swiftly flowing stream.

    來自全市四面八方的第一班的日班工人正川流不息地到來。
  13. Now you were just above the tangle of naked railway - lines, and foundries and other works rose about you, so big you were only aware of walls. and iron clanked with a huge reverberating clank, and huge lorries shook the earth, and whistles screamed

    現在康妮正到了那光赤的鐵道網的上頭，那兒四面都起著高大的鍍冶金屬的工廠和其他的工廠，歙人覺得四周只是些墻壁，鐵的聲音在囂響著，龐大的載貨車震動著地皮，號笛叫著。
  14. In late april or early may, the fishing community and associated clans take food, fruit and pink dumplings to the numerous tin hau temples in the sar as a mark of respect, hoping for good luck in the coming 12 months

    求神問卜，其中一個方法是求簽。看看六十四卦象中抽中那一卦，再請教解簽先生是吉是兇。要不，可以擲杯? ，從杯?正反面看看菩薩是贊成或反對。
  15. The main structure in the circular city has a square platform in front and a roof of several tiers of flying eaves. the roof is covered with glazed yellow tiles and edged with green glazed tiles

    其平面為十字形，前後有方形月臺，正中為重檐大殿，殿四面均有單檐卷棚式抱廈，頂覆黃琉璃瓦綠剪邊，飛檐翹角，宏麗軒昂。
  16. And then i froze, for all at once it hit me, again with overwhelming force, that all the other such scribbles in the world, scribbles and hieroglyphics everywhere, on bottles, on labels, on street - signs, in the newspapers, on tv, on the front of the stove and the refrigerator, scribbles everywhere that i had been ignoring up until now, looking at without really seeing them or paying any real attention to them, all around me, all of them had hidden meanings, all of them were trying to tell me something, all of them had something to say to me, secret wisdom to convey, if only i could learn to read them

    接著我呆住了，又一次被無可抵擋的力量擊中，一下子明白過來：世上所有類似的符號，胡寫亂畫，四面八方的鬼畫符? ?瓶子上，標簽上，大街的招貼，報紙，電視，火爐前面，冰箱正面，到處都是這種符號，從前我向來不加理會，視而不見，不明其意，也從來沒有真正注意的這些符號，身邊所有這些符號，全都隱含意義，他們全都試圖告訴我些什麼，全都包藏智慧，想傳達給我? ?之一我學會讀它們。
  17. 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） 。
  18. 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。
  19. 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。
  20. 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。
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