限界尺寸 的英文怎麼說

中文拼音 [xiànjièchǐcùn]
限界尺寸 英文
boundary dimensions of e. o. t. cranes
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 界 : 名詞1 （相交的地方; 劃分的界限） boundary 2 （一定的范圍） scope; extent 3 （按職業、工作或性別等...
  • 尺 : 尺名詞[音樂] （中國民族音樂音階上的一級 樂譜上用做記音符號 參看「工尺」） a note of the scale in ...
  • 寸 : Ⅰ量詞（長度單位） cun a unit of length （=1/3 decimetre）Ⅱ形容詞（極短或極小） very little; very ...
  • 限界 : bound
  1. In different in terne die travel, the metal flow characterize in warm extrusion forming processes and the affection for the flow of metal stage which made by the difference between the blank bottom altitude and the axial direction limiting size in warm extrusion forming technique have been analysed we have gotten the equivalent strain field and the velocity field and other field variable that the blank in different in terne die travel and the die travel - load curve. at the same time, we have analyzed the contributing factor for the oil pump stator forming process optimized and achieve thereasonable die parameter for the war m extrusion forming finally, the optimized technics parameters were used into pilot production, then the qualified oil pump stator forging were produced, the analog results were compared with those of pilot production

    論文具體分析研究了不同成形工藝過程中金屬流動的特點，並對不同凸模行程下溫擠成形過程中的金屬流動特點、坯料連皮厚度（底部高度）與溫擠壓成形工藝中的軸向界限尺寸的差值對金屬變形階段的影響進行了分析，獲得了坯料在不同凸模行程下的等效應變場、速度場等場變量及凸模行程-載荷曲線，同時對油泵定子成形過程的影響因素等進行了分析，優化並獲得了合理的溫擠成形工藝及模具參數。最後，利用模擬優化獲得的各項工藝參數進行生產實驗，得到實際生產出的合格油泵定子件，並將模擬結果與生產實驗結果進行比較。
  2. Locomotive and car clearance boundary and structure clearance boundary for 762mm gauge railways - classification and basic dimensions

    毫米軌距鐵路機車車輛限界和建築接近限界分類及基本尺寸
  3. This technique combines the edge - based finite - element method with physical optics ( po ) and physical theory of diffraction ( ptd ). the hybrid technique is applied to compute the scattering fields from the electrically large bodies with cracks and cavities on their surfaces. it is also used to analyze the scattering characteristics of microstrip antennas residing in a cavity mounted on metal objects with finite sizes

    本文採用edge - basedfem為基本方法，結合物理光學法（ po ） 、物理繞射理論（ ptd ） 、邊界積分方程（ bi ） 、區域分解技術（ ddm ）和完全匹配層（ pml ）吸收邊界條件等求解方法構成的混合方法，對電磁散射和輻射問題進行了研究，主要包括以下內容：提出了一種edge - basedfem與物理光學方法和物理繞射理論相結合的混合方法? fem po - ptd方法，並將該混合方法應用於帶有腔體或槽縫的電大尺寸導體目標的電磁散射特性分析和位於有限導體目標上的背腔式微帶貼片天線的電磁散射特性分析。
  4. The performance of the pbg antenna using the new pbg cover together with a pbg substrate is studied by the fdtd method together with the pml boundary treatment. the numerical results show that a more focused beam radiated in the broadside direction is achieved. the gain of the pbg patch antenna in the forward direction is improved by about 6 db. the radiation directivity is improved significantly and reaches 11. 5 db, which is 0. 4 db less than the maximum value that is allowed physically for this size of the antenna ( this difference is about 4. 1 db less than the difference achieved by thevenot et al.,

    用fdtd方法並結合pml吸收邊界條件，我們對加了這種新的覆層結構並且基底鉆孔的復合結構電磁（光子）晶體貼片天線的性能進行了研究，結果證明加了這種新的電磁晶體覆層結構以後，天線的波束收攏很多，並且向前輻射的增益大大提高，與普通天線相比，天線的e面和h面方向圖上向前輻射的增益均提高了約6db ，另外，該復合結構天線的方向性系數達到了11 . 5浙江大學博士學位論文db ，與該物理尺寸天線的方向性系數的理論極限值（ 11 . 9db ）相差0 . 4db ，該差值比thevenot等人設計的電磁晶體覆層天線的相應差值減少了約4 . 1db ，比qiu等人設計的電磁晶體天線的相應差值減少了約1
  5. The effect of polarons on the luminescence properties of quantum dots ( qds ) is an important problem in qd research and applications. we review the recent progress in the concept, possibility and size dependent energy variance of confined polarons in various qds. we suggest that the formation of polarons is related to intrinsic and / or extrinsic phonons and that the idea of confined polarons that we recently proposed can be used to explain the specific spectrscopic characteristics of oxidized nanosilicon systems, even single nanosilicon structures. this model may help to reveal the luminescence mechanism of porous silicon

    量子點中的極化子效應是當前量子點研究中的重要問題，其特徵急需了解.文章在綜述了量子點中限域極化子的概念、可能性和能量隨尺寸的變化規律之後，提出了界面限域極化子模型，該模型首次指明本徵聲子和外來聲子都可能對界面限域極化子的形成有貢獻.作者利用此模型分析了多孔硅體系中的光譜特徵，證實了表面覆有氧化層的納米硅的行為十分符合量子限域極化子的特徵.這一極化子模型與單個納米硅結構的發光譜十分一致，此結果對最終揭示多孔硅發光機理有重要意義
  6. The fem model was accurate and effective by using submodel and error estimation technique that ensured the reliability of calculation and analysis. the thesis got the measure of critical flaw and designing life of the girder. in addition, the thesis calculated the remaining life of the girder while the flaw reaching 150mm

    結合有限元分析結果和損傷容限設計方法，本文計算了馬鋼第三煉鋼廠4 # 125t鑄造起重機主梁下蓋板的臨界裂紋尺寸，及初始裂紋為0 . 5mm時主梁的設計壽命，並估算了在裂紋尺寸達到150mm時主梁的剩餘壽命。
  7. Boundary condition method just amend a little for intrinsic fem program, and can obtain low frequency sound transfer function of receiver based on existed fem mesh. the big sound source is divided into some elements by lumped sound source method, in which, the biggest size of element is smaller than the smallest wavelength of sound wave

    邊界條件法僅對原有的有限元程序作較小修改，並在已有的有限摘要元網格劃分上，能夠求解出接收點處的低頻聲傳遞函數;集中聲源法將大尺度聲源劃分為若干板塊，其最大幾何尺寸小於最小聲波波長。
  8. ( 2 ) study on the mechanics mechanism of the calamity caused by the cave of the highway : based on the investigation in detail along the line of the highway in shan - gan loess plateau, the distribution law, the classification and characteristic of hazard of highway cave are presented ; the calamity mechanism of highway cave opposite side slope and road bed is discussed, especially the mechanism of collapsing of the hidden cave in road bed. propose " the effect of hidden corrosion ", etc. 10 kinds send to mechanism of collapsing. based on the principle of limit balance, the formula of the critical treating thickness of hidden cave is put forward as follows : according to different stratum, different size and depth, the calculation of the critical thickness of the hidden cave of roadbed has been carried on

    （ 2 ）公路洞穴的致災力學機理研究：在對陜甘黃土高原區公路沿線黃土洞穴詳細調查基礎上，研究了公路洞穴分佈規律、危害分類及致災特點；公路洞穴對邊坡及路基的致災機理，重點是路基暗穴致塌機理，並提出了「潛蝕效應」等十種致塌機制；利用極限平衡原理導出路基暗穴臨界處理厚度計算公式如下：針對不同地區不同地層，對不同尺寸和埋深的暗穴，進行了路基暗穴臨界處理厚度的計算。
  9. It was possible to demonstrate by other methods refined structural differences among neuron types ; however, proof was lacking that the quality of the impulse or its conduction was influenced by these differences, which seemed instead to influence the developmental patterning of the neural circuits

    神經細胞中所顯示的諸如在尺寸，形狀，化學，神經脈沖中傳導速度，激發界限等方面的那種變化差異對多方面的精神感受可能有聯系來說仍然意義不大。
  10. The whole dynamic finite - element analysis simplified based on 2d plane is performed to adapt engineering requires. the effect of both kinematic interaction and inertial interaction on pile - soil - structure systems within layered soil field is relatively comprehensively investigated. at the same time, the boundary effect of model, the horizontal dynamic features of piles and the nonlinear characteristic of slide and contact on the interfaces of pile - soil are considered too on the ground of no - element meshing technique applied for dimensional effect of piles in stratum - soils

    建立了以適應工程需要的基於二維平面動力分析的簡化整體有限元模型；提出了能有效考慮樁尺寸效應的樁-土無單元劃分技術，在考慮了模型的邊界效應、樁基的水平動力特性和樁土界面的滑移、接觸非線性行為的基礎上，從時域內較為全面的研究了層狀土域中樁基上下部結構的慣性相互作用和運動相互作用兩種基本效應。
  11. To explain the inverse hall - petch relation in nanocrystalline metals, a geometric model is made, which assumes that the grains are spherical crystals, and the thick of grain boundary is considerable compared with the microcrystalline metals

    提出了一個球形晶體純晶界滑移幾何模型，得到出現反hall - petch關系的條件和小晶粒尺寸條件納米晶金屬材料的強度極限。
  12. This part emphasizes the synthesis of nanoarrays, aiming at controlling the size and distance of nanocrystallites using calixarene derivatives by altering the size, length and chemical structure of the organic molecules ; 2. this part emphasizes in situ synthesis strategy for fabrication of polymer network of zns based nanopowder, aiming at size controls, coating and preventing agglomeration following " one - pot " synthesis ; this method fits to low cost, large scale production ; 3. according to development in zno nanomaterials, we first report on the synthesis, characterization of amorphous zno, aiming at describing the principles and approaches of synthesis techniques, optical properties, spatial structure and doped effect ; the amorphous zno displays cage - like structure, showing a strong ultraviolet emission while the visible emission is nearly fully quenched, a potential uv - emission material ; 4

    本論文以量子結構自組裝為出發點，提出利用杯芳烴及其衍生物的化學受限反應實現尺寸可調半導體納米粒子自組裝；提出有機聚合網路原位組裝zns基納米熒光粉方法，把熒光粉的納米化、包敷、防團聚在「一鍋」反應中完成，適于低成本，批量生產；根據當前zno的研究情況，我們首次合成了非晶zno ，研究了它的光學性質，確定了它的結構，並對其摻雜進行了初步的研究，非晶zno表現出強的深紫外發光特性，而可見發射非常弱，是一種有巨大潛在應用價值的深紫外發光材料；利用非晶zno的亞穩特性，對晶化過程中非晶zno納米晶zno三維受限量子結構特性，界面特性進行了深入的研究；利用固相熱分解一般受擴散控制特性，實現了尺寸可控的zno三維量子結構的自組裝；利用非晶zno的高度分散性，容易均勻成膜特性，實現了非晶籽晶誘導低溫液相外延自組裝生長高取向zno晶體薄膜。
  13. The sizing method based on fraunhofer diffraction is limited. because of the limitation of size parameter a ? 1 and size of photodetector, it ca n ' t measure the particles less than 5 microns accurately. to extending lower limit of measurement, inverse - fourier - transform technique is discussed

    利用夫朗和費衍射理論時對粒子的界定要求尺寸參數a 1 ，又加上光電探測元件的尺寸受到限制，故不能準確地測量5微米以下的顆粒，為此必需擴大測量下限。
  14. The physical and mathematical models are founded. numerical simulation of marangoni convection in the liquid bridge and gas channel was performed by employing the primitive variable method and using galerkin finite element method, which is applied for discretization of non - dimensional governing equations and boundary conditions. the relationship between the suppressing status of mc in the liquid bridge and the inlet gas velocity or the channel width is obtained, and the suppressing status of some kinds of marangoni numbers ( ma ) or size ratios of liquid bridge a is analyzed

    採用原始變量法，用galerkin有限單元法對無量綱控制方程及邊界條件進行離散后，數值模擬了微重力條件下半浮區硅熔體及氣體流道內的marangoni對流，得出了無量綱氣流沖刷速度及流道寬度變化和熔體內熱毛細對流抑製程度的關系，進而分析了不同的無量綱參數ma數和不同熔體幾何尺寸比a下熱毛細對流抑制情況。
  15. The buckling and ultimate strength of ship plating normally depend on a variety of influential factors, namely geometric / material properties, loading characteristics, initial imperfections ( i. e. initial deflections and residual stresses ), boundary conditions and corrosion, fatigue cracking

    船體板的屈曲和極限強度取決于很多影響因素，主要有：板的幾何尺寸、材料特性、載荷特徵、初始缺陷（如初始變形和焊接殘余應力） 、邊界條件以及腐蝕的影響、疲勞裂紋等。
  16. Referring to three kinds of plan irregularity, structures individually with four kinds of irregularity as eccentricity in one direction, eccentricities in two directions, re - entrant corner irregularity and diaphragm discontinuity have been analyzed to investigate the relationship between torsion effects and parameters of above irregular structures. the parameters and the schemes for determining the scope of structures with different kind of irregularity considering seismic action in two directions simultaneously are proposed, some conclusions have been get as following : it is indicated by the analysis results that torsion effect has no dependency relation with eccentric torsional angel adopted in code for seismic design for buildings. it is suggested that the eccentric torsional angel should not be take as the parameter of torsion effect of structures considering seismic action in two directions simultaneously ; for the structures with regular plan and elevation and with eccentricity in one direction due to irregular mass layout, the relative eccentricity can be take as the parameter of torsion effect of structures considering seismic action in two directions simultaneously ; for the structures with regular plan and elevation and with eccentricities in two directions due to irregular mass layout, the ratio of relative eccentricities in two directions and the angel of them can be take as the parameters of torsion effect of structures considering seismic action in two directions simultaneously ; it is indicated by the analysis results that the torsion effect has no dependency relation with re - entrant corner ratio adopted in code for seismic design for buildings as

    所取得的主要結論有：結構的扭轉效應與《抗震規范》所採用的扭轉不規則指標即偏心扭轉角之間的相關性較差，偏心扭轉角不宜作為判斷結構是否計及扭轉效應及需考慮雙向水平地震作用的界定指標；對于樓層間均勻偏心的多層單向偏心結構，建議採用相對偏心距作為需考慮雙向水平地震作用的界定指標，並給出針對不同平面尺寸的界限相對偏心距；對于樓層間均勻偏心的多層雙向偏心結構，建議採用兩個主軸方向的相對偏心距及其夾角作為界定指標，結合單向偏心結構的界定方案進行需考慮雙向水平地震作用的結構范圍界定；凸凹不規則結構的扭轉效應與凸凹比例無正相關關系， 《抗震規范》要求所有平面布置不對稱的凸凹不規則結構計及扭轉效應的規定欠妥當，建議凸凹不規則界限值從30改為15 ，只要求分析採用空間模型比較合適； 《抗震規范》關于有效樓板寬度較小的結構需計及扭轉效應的規定很有必要，樓板局部不連續的結構需採用符合樓板實際剛度的計算模型予以分析，可使用相對偏心距（及其夾角）參照單向（和雙向）偏心結構的界定方案，界定樓板局部不連續結構是否需要計入雙向水平地震作用下的扭轉效應。
  17. At last, taking advantage of the finite differential time domain method and it ' s perfect match layer absorbcfacient border, we got the energy distribution in a typical micro - disk laser and simulated the radiation between q value and the radius of the micro - disk

    最後運用電磁場時域有限差分法（ fdtd ） ，採用具有很好吸收效果的完全匹配層吸收邊界，研究了典型微盤激光器的能量分佈以及微盤的q值隨微盤半徑尺寸的變化。
  18. 4, using the finite element method, the buckling of the case is studied under the loads including the axial force torsion and pressure. the results will be benefit for aero - engine design in the future. the buckling characteristics of the two new kinds of composite ( t300 / kh - 304 and t300 / bmp - 316 ) is studied under the same boundary conditions sizes and plies, the anti - buckling ability of t300 / kh - 304 composite laminate is better than that of t300 / bmp - 316 composite plates

    4 、首次用有限元法和圓柱殼體耦合理論分析了t300 bmp - 316復合材料機匣分別在軸向力、扭矩和內壓等單獨作用以及耦合作用下的屈曲特性，為進一步研究打下了基礎；運用有限元法分析了t300 kh - 304和t300 bmp - 316兩種復合材料層合板的屈曲特性，討論了鋪層方式、尺寸、位移邊界條件等參數對屈曲特性的影響。
  19. A finite element analysis ( fea ) was eventually conducted, using mori - tanaka model and j - integral, to further explain the toughening mechanisms and fracture behaviour of the particle interleaved composites. the aim of the analysis was to examine the influence of the particle concentration and size, and the interaction between the particle and the crack tip. fea results indicate that interlayer zones can effectively lower j - integral and stress around the crack tip, and the high stress distribution in the region close to the interface can be the driving force for interfacial failure

    本文的最後還藉助于有限元方法對層間增韌復合材料進行了宏觀和細觀斷裂韌性分析，基於mori - tanaka等效夾雜理論，計算了顆粒含量和尺寸對j積分的影響，有限元分析的結果同樣表明層間增韌可以有效的降低裂紋尖端應力水平，並暗示界面是可能存在的失效原因，所進行的數值分析起到了進一步支持和解釋增韌機理的作用。
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