有限小數 的英文怎麼說

中文拼音 [yǒuxiànxiǎoshǔ]
有限小數 英文
finite decimal
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 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
  • 小 : Ⅰ形容詞1 （體積、面積、數量、強度等不大） small; little; petty; minor 2 （年紀小的; 年幼的） youn...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 有限 : limited; restricted; finite; a little; not much
  1. Piezoelectric - stack can give more output displacement and pressure and have more rate of conversion and more stability than bimorph type. it has been used to all kinds of driving places. design of displacement amplification we design displacement amplification because of the little displacement output of the piezo - stack. this paper analyses the disadvantage and advantage of all sorts of amplification, and proposes a new type of displacement amplification based on

    鑒于壓電疊堆輸出位移小的特點，引入柔性鉸鏈位移放大機構，分析了各種放大機構的優缺點並結合實際問題，設計出基於三角形放大原理的橢圓形放大機構，利用有限元分析軟體ansys對放大機構的主要結構參數進行了分析，得出影響放大機構放大倍數的規律。
  2. The scielltific computational theories and methods on bird strike to the windshield of aircraft have been systematically studied and summed up in this thesis, such as fem comptltational principles and procedures to elastic dynamic problems under the conditions of small and non - linear finite deformation, 3d viscous elastic constitutive theory and incremelltal expression under the consideration of the rate effect of non - metallic materials like the aircraft windshield, and the numerical compatational principles and key constitutions for impact - contact dynamic subjects

    2 、系統學習並歸納總結了鳥體撞擊風擋結構問題中的科學計算理論與計算方法。按照鳥撞問題數值計算方法逐步深入的思路，系統總結了小變形結構動力學有限元數值計算方法、有限變形的幾何非線性有限元數值計算方法、粘彈性體非線性形變的本構物理關系；對于實施復雜結構有限元動力學計算的載荷增量方法提出了對newmark差分的改進以及進行材料與幾何非線性數值計算的細致步驟。
  3. The gravity analysis is carried out especially for the synthetic fused silica and calcium fluoride used in 193nm lithographic objective as well as the optical elements with structural sizes of ( 200mm ~ ( 300mm. large numbers of analysis data for surface shape error are obtained by using algor finite element analysis software. then these data are plotted into curves and comparison analysis will be carried out, finally the measures and schemes for reducing gravity deformation are proposed

    因此，本論文重點對大口徑光學系統在高精度光學鏡頭裝校中，因重力變形進行了詳細的分析研究，特別針對193nm光刻物鏡系統所使用的材料sytheticfusedsilica和caleiumfluoride以及用到的結構尺寸200mm ~ 300mm光學零件進行了重力變形分析，使用algor有限元分析軟體獲得了大量的面形誤差分析數據，然後將這些數據繪成曲線進行對比分析，最後提出了減小重力變形的措施與方案，並進行了實驗，驗證了分析結果是正確的，減小重力變形的方法是有效的。
  4. Use division transformation, the rational number must be expressed by limited decimal or unlimited circulating decimal

    利用帶余除法公式，給出有理數必可表示為有限小數或無限循環小數的證明。
  5. Although limiting information collection could increase the risk that researchers will overlook facts relevant to a study, frazier and mosteller contend that such risk, nerver entirely eliminable ( 15 ) from research, would still be small in most studies

    盡管有限的信息收集可能使得這種風險增加- -即調查者忽略和調查有關的一些事實，但是f和m認為這種從來就不能完全消除得風險在大多數的調查中仍然很小。
  6. Teacher : if the decimal place is finite, the decimal is called a finite decimal

    教師揭示：小數部分的位數是有限的小數，叫做有限小數。
  7. In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab

    針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。
  8. Obtain these chief research achievements. ( 1 ) the method of hydraulic fracturing, kaiser effect experiment and the finite element numerical simulation computation results, the direction of maximum horizontal principal stress intersect the small - angle of tunnel axial line, it is favorable to the stability of tunnel peripheral rock ; according to the test rust of field stress - relief method, at the present time, zhe gu mount tunnel have n ' t access to high crustal stress site, maximum principal stress magnitude is 17mpa ~ 20mpa

    主要獲得以下研究成果： （ 1 ）綜合水壓致裂法、室內巖石kaiser效應試驗和有限元數值模擬計算研究成果，最大水平主應力方向與隧道洞軸線小角度相交，對隧道圍巖穩定性有利；根據現場應力解除法測試結果，目前鷓鴣山隧道尚未進入高地應力段，最大主應力量級為17mpa 20mpa 。
  9. The effects of ssc ( small - scale sub - lithospheric convection ) on seafloor topography are investigated by formulating a 2d thermal convection model that is parallel to plate motion

    摘要根據建立的垂直於大洋中脊的二維熱對流有限元數值模型，採用常粘性以及與溫度相關的粘性兩種粘性結構對小尺度地幔對流對海底地形的影響進行了重新研究。
  10. The results proved that : ( 1 ) because of the material ' s difference of primer - 9 and primer - 5, the maximum stress of primer - 5 is larger than primer - 9 but the maximum displacement is smaller than primer - 9. ( 2 ) because of the unrenewable shape changing of primer - 9 after impacting by the pin, it will cracking under high pressure more easily. so, the paper give the suggestion that the designer should decrease the depth of impacting by pin in the case of the primer be fired successfully

    對底- 9底火、底部被擊針撞擊后的第- 9底火和底- 5底火在膛壓作用下分別進行了有限元數值分析，計算表明： （ 1 ）底- 5底火底部擊針撞擊部位為火帽座，其材料為鋼帶，底- 9底部承受撞擊部位為底火體，其材料為冷拉退火圓鋼，由於材料強度不同，承受壓力能力和變形能力不同：雖然在膛壓作用過程中底- 5底火的最大應力值比底- 9底火的大，但底- 5底火的最大位移量卻比底- 9底火的小得多。
  11. A new method, which named reverse shrinking surplus method, has been pointed out based on the fem in order to optimize the speed curve of the spindle

    摘要在基於有限元數值模擬的基礎上提出了反向最小余量法，用以優化芯輥進給速度曲線。
  12. When 0 ? ply is included and lay on the surface in a laminate, the ultimate strength is the highest ; if a laminate does not possess both 0 ? ply and 90 ply, then it shows relatively large first - ply failure strength, but the ultimate strength is much smaller than that of laminates including 0 ply

    拉伸試驗和有限元數值分析表明：若板內含有0 ?層，且該層位於板的表層時，則最終強度最大；若板內既無0 ?層，又無90 ?層，則初始層破壞強度較大，而最終強度遠小於含有0 ?層板的最終強度。
  13. Numerical viscoelastic modeling for porphyroclast rotation in ductile shear zones is done by a viscoelastic finite element program based on detailed investigation to three ductile shear zones, the taihangshan mountains, north china. in this model porphyroclast garnet is assumed as isotropic elastic material with small elastic deformation, while the matrix quartz, feldspar as viscous fluid maxwell material which has increasing deformation with time. the viscosity of matrix is supposed to be 10

    採用粘彈性力學分析程序對太行山阜平地區剪切帶中斑晶旋轉問題進行了有限元數值模擬。在計算模型中假定：石榴石斑晶為彈性材料，在應力作用下只產生很小的彈性變形石英長石質的基質部分為粘彈性材料，它具有隨時間變形不斷增大的特性。
  14. With the help of this program, this paper does research on the moved backwards of the slide surface, lengthening the anchor section, the soil nail ' s total force, gets conclusion about relations between the soil nail ' s length and the slope ' s grade, height, soil ' s mechanical parameter ; relations between soil nail ' s total force and coulomb soil pressure. with the help of the large multiuse finite element program ansys, this paper analyzes the soil nailing in one - step ' s slopes, in two - steps " slopes, puts the emphasis on the axis force ' s distributing along the soil nail at each rows, the effect of both the excavating mode and the original slope figure to the axis force of the soil nail, the one another effect between the upper - step slope and the nether - step slope in the soil nail ' s axis force, gets conclusion about the design of soil nail at the first low, different slope body is the same with different excavating mode, the original slope figure has more effect to some than others because of the slope body, the reasonably design of the step width in two - steps slopes, the two - steps excavating and retaining has more virtue than the one - step ' s. through soil pressure analysis this paper does research on the differences and the links between the coulomb soil pressure theory and the rankin ' s, the vertical pressure at the slope surface when the slope surface is inclined and the retaining wall is rough, the soil pressure ' s distributing behind the panel, gets conclusion about the effect of both the slope body inner stability and the slope surface local stability to the soil pressure

    通過分析比較，論證了對數螺旋線型比圓弧形作為邊坡的假設滑裂面具有較多的工程優點，並為此編制了一個採用極限平衡法分析土釘支護的fortran語言程序，以此作工具對滑裂面的后移、土釘錨固段的超長、土釘總力的大小等方面作了研究，得出了有關土釘的長度與邊坡的坡角、坡高、土體力學參數的關系、土釘總力與庫侖土壓力間的關系等結論；採用大型通用有限元數值分析程序ansys分別對採用土釘支護的一階邊坡、二階邊坡進行分析，重點是研究各排土釘的軸力分佈規律、開挖方式及原始邊坡形態對土釘的軸力的影響、上下階邊坡在土釘軸力方面的相互作用，得出了有關第一排土釘的設計問題、不同類型的土體應適用於特定的開挖方式、原始開挖出的邊坡形態對一些類型坡體的邊坡土釘支護有較大的影響而對另外一些影響不大、二階邊坡臺階寬度的合理確定、二階開挖及支護比一階時具有較多的工程優點等結論；通過土壓力分析對朗肯、庫侖兩種經典土壓力理論的區別與聯系、坡面傾斜及墻背有摩擦時的坡面豎向應力分佈、面板背土壓力的分佈形態作了研究，得出了邊坡支擋土壓力受坡體內部穩定與坡面局部穩定兩個方面的影響、土釘支護面板背土體中卸荷拱的存在對面板受力有利等結論。
  15. All the results of axial and radial deformation measurement by digital image processing technique and those by traditional method are compared. the differences of the soil parameters on duncan and chang ' s nonlinear model made by these two methods are analyzed. finally, a compress test results and fem results are provided to show the reasonability and veracity of digital image processing technique to study the soil stress - strain characteristic in triaxial test

    （ 2 ）三軸試驗土樣局部變形研究：首先定量比較了三軸試樣沿高度方向不同位置的局部變形（局部徑向變形與局部軸向變形）大小，分析了三軸試樣局部變形的特點和影響因素；然後把三軸試樣數字圖像測量結果與傳統測量結果進行比較，以鄧肯張非線性模型為例進行了模型參數的整理，分析了兩種不問測量方法引起的參數差異：最後用原型壓縮試驗對比有限元數值計算結果，驗證了數字圖像測量方法得到的三軸試驗土體應力應變參數的合理性和準確性。
  16. 3. base on the numeric method of finite element, the influence of interrelated shift coefficient and tooth number z to bend intensity of gear is studied. with the increase of the tooth number, tooth root maximum pull stress decrease ; with the increase of the interrelated shift coefficient, tooth root maximum pull stress increase

    3 、基於有限元數值計算方法，分析了不同關聯變位系數和齒數z對齒輪彎曲強度的影響：隨著齒數的增大，齒輪最大拉應力減小；關聯變位系數越大，齒輪最大拉應力越大。
  17. Particularly four following respect problems of main research of this thesis : first, excavating and optimizing of the road bed and the slope protect, on the basis of influence factor analysis and the slope design principle by the expressway of mountain area of limestone, we excavate the model of optimizing after putting forward the road bed which is suitable for the expressway of mountain area of limestone, through employ this optimize model, we can reduce the amount of road bed excavate, thus maximum reducing slope excavate destruction to environment and pollute ; according to limestone mountain area expressway characteristic of the cutting slope, we use the law of finite element and rmr of revision carry on stability analyze and appraise to their side slope ; combine the limestone rock body characteristic of mountain area, we have analyzed the corresponding side slope safeguard procedures

    論文主要研究了以下四方面問題:第一，路基開挖優化。在分析石灰巖山區環境特徵的基礎上，探討了石灰巖山區路線設計的原則與方法;在應用有限元數值分析方法對邊坡的開挖穩定性進行分析的基礎上，提出了陡開挖強支護的石灰巖山區高速公路的路基開挖方式，並建立了填挖平衡，開挖面積最小的石灰巖山區高速公路的路基開挖量優化模型;結合石灰巖山區巖體特性，探討分析了相應的邊坡防護措施。第二，土石方處理及自然水系調治恢復。
  18. In order to restrict the displacement of relaxed rock effectively, the factors affecting the efficacy of anchor measures are analyzed according to mechanism of action of anchor. in terms of principle orthogonal design, the influence of parameters of anchor to displacement of excavation slope are elevated by computing using finite element method simulation, and the optimal scheme of anchoring parameters including length of anchors and space between bolts and thickness of shot concrete are defined. finally, the optimal scheme of anchor parameters are determined with considering results of theory analyse and numerical calculation, which provide theory bases for engineering

    為了有效防治邊坡開挖后巖體的鬆弛變形，根據錨桿的作用機理對影響錨固效果的主要因素進行分析，並利用處理多因素試驗的科學方法?正交設計原理，以有限元數值計算為手段，以有效約束邊坡開挖位移為標準，評價了錨桿長度、錨桿間距、混凝土噴層厚度等錨固參數對邊坡變形的影響大小和規律，經過比較分析最終提出了錨固參數的優化設計方案，為工程設計提供了理論指導。
  19. However, vector fonts often render poorly in small sizes in low - resolution devices, such as computer screens, due to the limited pixels available to fit the curves

    但是，在計算機屏幕這樣的低解析度設備上，由於用於擬合曲線的像素數量有限，小尺寸的向量符號渲染很差。
  20. 4 main parameters of the pcc pile such as length of pile, diameter of pile, rigidity of pile, wall thickness of pile are analyzed by the method of the thesis. the calculation results indicates that most markedly factor is pile diameter, in the next place pile length and property of ground soils, the impact of rigidity and wall thickness of pile are relatively little

    4 、運用本文的方法對影響pcc樁水平承載性狀的主要參數進行了有限元數值模擬試驗計算分析，分析結果表明對pcc樁水平承載性狀影響因素最大的是樁徑，其次是樁長和地基土的性質，而樁身剛度和樁身壁厚的影響相對較小。
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