前錐體 的英文怎麼說
中文拼音 [qiánzhuītǐ]
前錐體
英文
front cone-
The rocket climbs upward and onward, with an artificial satellite cradled in its nose cone.
隨帶裝在其前端錐形體內的一顆人造衛星，火箭一直向上，向前爬升。With the use of finite method we have developed computer simulation software for vacuum microtriodes with wedge - shaped and cone - shaped cathode on the basis of stduying deeply the field emission theory of vacuum microelectronics. the software included field section, grid point numbering, and the calculation of electric currents, transconductance and cathode capacitance, moreover, it can simulate the properties of vacuum microeletronic with variant structures and sizes. the relationship was studied and simulated among electic properties and device structures, sizes and cathode materials etc. the optimized design of vacuum microtiode was proposed
本文在深入研究真空微電子器件場致發射理論的基礎上，根據圓錐形、楔形陰極真空微電子三極體的不同特點，分別建立了物理和數學模型，在考慮空間電荷密度影響的前提下，以有限元法為基礎採用迭代的方法計算出真空微電子三極體內的電勢分佈情況，繪制出了等勢線、電子軌跡線，並得到了器件電學性能隨幾何參數的變化情況。Cartoonist william nearly describes it this way your feet and hands are attached but your upper body can move around the center of the bike in a cone shape when you stand you simply get a bigger cone of movement which allows you to have more control over the bike moving your body around also allows you to shift the focus point of your weight from seat to pedals to handle bars you can add weight to either wheel to improve traction for breaking climbing or turning
漫畫家?威廉描述：雖然腳和手是固定的，但可以身體卻可以（以坐墊為中心）角錐狀地活動，當你站起來可以把中心移到雙腳而得到更大的角錐體移動，那會讓你有更大的空間改變重心，讓前後輪得到煞車、爬坡和轉彎的最大抓地力。So far few studies have examined the ontogeny of the overall synaptic responses in rat hippocampal ca1 neurons during postnatal development a systematical study of the evoked synaptic responses during development is useful for understanding the developmental integration of neural signals on the ca1 pyramidal neurons
到目前為止，還未見對發育過程中大鼠海馬ca1錐體神經元總突觸反應的生后發育進行研究的報道，因此對發育過程中誘發的突觸反應進行系統的研究有利於闡明ca1錐體神經元對神經信號的發育整合。" this is tiro, master of ceremonies for today ' s the robot - featuring a cone - shaped body, two arms and a dark - glassed face with eyes and a mouth of flashing lights - said in front of smiling guests
泰羅的身體呈錐形，有兩只胳膊一張褐色的「玻璃臉」眼睛和嘴巴閃著亮光，它在笑臉盈盈的各位來賓前自我介紹說： 「我是泰羅，我是今天婚禮的司儀。 」" this is tiro, master of ceremonies for today ' s wedding, " the robot - featuring a cone - shaped body, two arms and a dark - glassed face with eyes and a mouth of flashing lights - said in front of smiling guests
泰羅的身體呈錐形，有兩只胳膊一張褐色的「玻璃臉」眼睛和嘴巴閃著亮光，它在笑臉盈盈的各位來賓前自我介紹說： 「我是泰羅，我是今天婚禮的司儀。 」" this is tiro, master of ceremonies for today ' s wedding, " the robot - - featuring a cone - shaped body, two arms and a dark - glassed face with eyes and a mouth of flashing lights - - said in front of smiling guests
泰羅的身體呈錐形，有兩只胳膊、一張褐色的「玻璃臉」 、眼睛和嘴巴閃著亮光，它在笑臉盈盈的各位來賓前自我介紹說： 「我是泰羅，我是今天婚禮的司儀。 」Here we report that growth cones of rat cerebellar axons in culture turned away from a gradient of sdf - 1, a chemokine that attracts migrating leukocytes and cerebellar granule cells via a g protein - coupled receptor ( gpcr )
以前的證據表明， sdf - 1 ，一種經典的chemokine ，能夠吸引白細胞和遷移中的神經元，這種作用是通過g蛋白耦聯受體介導的。利用生長錐轉向分析，我們發現sdf - 1的濃度梯度能夠吸引或排斥培養的小腦顆粒細胞的生長錐。The numerical simulation of axisymmetric two - dimensional shock tube is studied, which has a conical convergent section, and its driving gas is the hot product of hydrogen oxygen detonation. finite volume tvd scheme is adopted and the mesh is local orthogonal. the primitive equations are euler s equations of multi - component flow. the new method of eliminating numerical oscillation at the interface of two materials is extended to two dimensions. the mechanical character of this shock tube is analyzed
對由前向爆轟產生驅動氣體並具有局部錐形收縮截面的軸對稱激波管利用兩相常比熱完全氣體的歐拉方程組和有限體積tvd格式在局部正交的網格上進行了二維數值模擬。將消除兩種介質界面處數值振蕩的新方法成功地推廣到二維情況。分析了該激波管的力學特性。The likely explanation for this paucity is that during their early evolution in the mesozoic ( 245 million to 65 million years ago ), mammals were small, secretive and nocturnal
哺乳動物錐色素減少的原因，可能是哺乳動物剛在2億4500 ~ 6500萬年前的中生代演化出來時，體型小、潛匿且夜行。The illustration is by hand to express, quote from this literary reference of “ the head hangs the beam, the zhui stabs ” of ancient times, but the ancients cloud : " in the book there is gold house ", an monster is binding the hair to try very hard to studying on the ceiling, there is a large number of gold ingot in front of him, but his is die of have eyes fixed on this gold, still stay the exit water in mouth, take the irony meaning, deliver the deep province of person, attack current education system in china not perfect, the examination is hardly limited the student ' s imagination and creative ability
用手繪插畫的形式來表現，引用了古代「頭懸梁，錐刺股」的這一典故，而古人云： 「書中自有黃金屋」 ，一個怪人正把頭發綁在天花板上拚命讀書，在他面前的是一堆金錠，而他的眼睛正在死死的盯住這堆黃金，嘴裏還留出口水，帶有諷刺意義，發人深省，抨擊了中國現行的教育體制的不完善，功名考試極大的限制了學生的思維和想象力。More attentions are taken to the applications of the interferometer for the quantificational and real - time measurements in the following aspects : the laser ' s wavefront, the homogeneity of laser bar, angle deviation of flatness optical components, and surface roughness
重點研究了數字式波面干涉儀的應用，定量、實時測量了激光波前質量、激光棒波前畸變、利用波面計算錐體棱鏡角度、表面粗糙度等。Abstract : approximate methods for calculating aerodynamic heating rates on space shuttles are discussed. various methods are given for predicting the heating rate at axisymmetric stagnation points, general three dimensional stagnationpoints and the leading edge stagnation point of wings. numerous laminar and turbulent heating techniques for flat plates and cones are analyzed and compared. a brief review of some methods is presented to predict heating rate for winward centerline and lateral direction off the symmetry plane. the results show that the methods are simpler and can guarantee enought precision for predicting aerodynamic heating environment of space shuttles
文摘:介紹了國內外預測航天飛機氣動加熱的工程計算方法.給出了軸對稱、非軸對稱和機翼前緣等各種外形駐點熱流密度的計算，分析和比較了平板、錐體的層流和湍流熱流密度計算的各種方法，概述了航天飛機迎風面中心線和離開中心線橫向熱流密度的計算.計算結果表明，本文方法用在航天飛機氣動熱環境初步設計中比較簡單並且有足夠精度It also introduces the producer ' s system of sbeg. analyses the production process and makes a proposal to improve it. according to the reality of sbeg, on principle of lean thinking, it designs some projects in order to put lp in practice, especially how to ameliorate the equipments of abrade to realize continuous process ; it also analyses operation change approaches in detail in order to offer some suggestions to shorten the operation change time and it brings forward maintenance methods fitting the continuous process, especially the use of statistics in forecasting maintenance
根據sbeg的實際情況，基於精益思想的原則，設計了精益生產方式實施的具體方案：為了實現屏生產線生產連續流程，根據sbeg的具體情況，設計了屏后加工設備改造的方案，並對不同品種產品所需后加工各工序設備數，以及對應的節拍進行了計算；針對目前錐成型作業轉換時間長的狀況，分析了作業轉換的詳細步驟，提出了縮短作業轉換時間的具體方法；設計了全面設備維修方案，以保證連續流程的正常進行，並將數理統計方法應用到制定預測性維修方案中。A mathematical model of flows in the substrate was established using the equivalent continuum approach, and multi - dimensional numerical simulation of the steady flows in the catalytic converters was performed. simulation results show that the separation and vortex, which cause the pressure loss and the velocity non - uniformity at the front of the first substrate, are generated near the wall of the conical pipe. in addition, the larger the inlet cones angle the more the pressure loss and maldistribution in converters, however, when the angle enlarges enough the pressure loss would be decrease
結果顯示氣流在擴張圓錐管壁附近出現分離產生較強的擾動，造成局部流動損失和載體前氣流速度沿徑向分佈不均勻；入口擴張管結構對催化器的流動特性有很大影響，但並非擴張角越大，催化器流速武漢理工大學碩士學位論文分佈的不均勻性和壓力損失也增大，而是存在著一個最佳角度，但當擴張角增大到一定程度以後，擴張角對流速分佈和壓力損失的影響變小。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。The key factor influencing the automobile ' s drive bridge performance is the reducer assembly quality, and the tightening at the bearing of the front - part of the driving gear axis is an important problem in the process of the reducer assembly
汽車驅動橋主減速器的裝配質量是影響驅動橋整體性能的一個關鍵因素，主減速器裝配過程中的一個重要問題就是主動錐齒輪前端的一對圓錐滾子軸承的預緊。Anterior pyramidal tract
前錐體束Front cone profile
前錐體側視圖Front cone heigth
前錐體高度分享友人