普通對數 的英文怎麼說

中文拼音 [pǔtōngduìshǔ]
普通對數 英文
common logarithm
  • 普 : Ⅰ形容詞（普遍; 全面） general; universal Ⅱ名詞（姓氏） a surname
  • 通 : 通量詞（用於動作）
  • 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 普通 : common; general; ordinary; plain; honest; private; trile; average
  1. In the first way, the coordinate become operaotrs acting on a hilbert space, which provides for a respresentation space of the noncommutative space, on the other hand, starting with the standard commutative gauge theory action and then reinterpreting any products of fields appearing in terms of the moyal product

    從而非對易空間的場量是運算元的函數。另一方面，我們可以從普通空間的規范理論的作用量出發，然後用moyal星乘積來代替普通空間的規范理論中場量的普通乘積。從而給出非對易空間規范理論的作用量。
  2. The welding technology of francis turbine runners is optimized from the view of subsection welding and local heating by numerical simulation. the result shows that welding residual tensile stress appears in the weld and its area nearby, and peak stress appears in the dangerous area of blades after practising quondam welding technology ; welding residual tensile peak stress in the dangerous area of blades can be decreased by welding both ends earlier and then welding middle section later during subsection welding, and decreasing effect on welding residual stress of the subsection welding is related to the weld length of blade outlets and welding direction of each subsection ; decreasing effect on residual stress of the local heating is direct proportional to heating time, heating temperature, heating area, and inversely proportional to cooling area, and welding residual tensile peak stress in the dangerous area is decreasing trend earlier, and then increasing trend later with heated location increased

    本文利用數值模擬手段對轉輪的焊接工藝從分段焊和局部加熱兩個方面進行了優化，結果表明:採用普通工藝焊接時，葉片焊后殘余拉應力出現在焊縫及其附近區域，並且在葉片出水邊的熔合線附近（危險區域）出現了峰值;在採用優化的分段焊時，先焊兩端后焊中間的方法可以降低葉片危險區域的焊接殘余拉應力峰值，降低效果與葉片出水邊焊段長度、焊縫各段的焊接方向有關;局部加熱法降低轉輪危險區域殘余應力的效果主要與加熱時間、加熱溫度以及加熱面積成正比，與冷卻面積成反比，並且危險區域的殘余應力隨加熱區域的增大呈先降低后升高的趨勢。
  3. A framework for dialectal chinese speech recognition is proposed and studied, in which a relatively small dialectal chinese or in other words chinese influenced by the native dialect speech corpus and dialect - related knowledge are adopted to transform a standard chinese or putonghua, abbreviated as pth speech recognizer into a dialectal chinese speech recognizer

    但在實際中，多數人所說的普通話因受其方言背景的影響而不十分標準，這大大影響了語音識別的性能。一種解決方案是，對每種方言都收集足夠多的語音數據然後構造相應的識別器，但由於漢語方言種類多且差異大，時間和成本都是很高的。
  4. Researches on the stereophotogrammetry of digital images, which include relative orientation, absolute orientation, image matching and the evaluation of their accuracies ; 4

    普通數碼影像的立體測量方法研究，其中包括對普通數字影像的相對定向方法、絕對定向方法、影像匹配方法的研究及其相應精度的評價； 4
  5. The simulation results are compared to the normal dipole antenna in order to observe the influence of fractal and investigate the effect of antenna miniaturization. the relationship between miniaturization and fractal dimension is researched. the koch and 3 / 2curve fractal unit are applied to yagi - uda antenna, the performance like impedance characteristic and radiation pattern is simulated by cst microwave studio ?

    對其阻抗特性及輻射方向圖進行了模擬計算，並分別與未應用分形的普通半波振子天線相比較，觀察分形對天線性能的影響，以檢驗分形天線小型化的效果，研究了尺寸縮減性與其分形結構的分形維數之間的關系。
  6. This paper focuses on the research of the stress mechanism of the ribbed shell structure in statics, dynamics and under the explosive load on the basis of the engineering practice of cave depot of single aircraft. in this paper, according to the classical shell theories, the basic differential equilibrium of the ribbed shell structure and the finite element analysis of 3d rippled plate are established, in which the function of annular ribs reinforcement bars and 3d ripped steel plates are distributed in the range of the steel, and the functions along the longitude direction of tension, bending, and torsion are neglected ; applied with dynamic analytical theory, the dynamic model of ribbed shell structure and the analytical theory model of elastic - plastic are set up ; the triangle series method is used to solve the displacement and stress under the distributed load and the concentrated load of the ribbed shell structure

    本文以軍用機場地面單機掩蔽庫工程建設為工程背景，首次對內襯三維波紋鋼板混凝土拱型復合結構的受力機理進行了靜力、動力和爆炸荷載的分析研究。根據將橫肋、鋼筋及三維波紋鋼板的作用均勻分佈在殼體范圍內的情況，忽略橫肋、鋼筋及三維波紋鋼板沿殼體母線方向的抗拉、抗彎及其抗扭作用，首次推導出了內襯三維波紋鋼板混凝土殼體的微分平衡方程，建立了有限元計算模型，並採用三角函數法，求解了三維波紋鋼板混凝土拱型復合結構在分佈荷載和集中荷載作用下的位移響應和應力響應，並與普通殼體進行了比較。
  7. In view of this situation this article has conducted research to the design of metallurgy auxiliary biography with the frequency conversion table electrical machinery first multianalysis to the frequency changer and the frequency conversion table electrical machinery movement characteristic is carried out, the voltage waveform harmonious which the frequency changer outputs is big, attacks in a big way, and the voltage climbing rate reaches as high as 6600v / mu s which is 20 times ordinary sine alternating voltage, the rolling mill auxiliary biography table set the extremely strict request to the electrical machinery ; its movement frequency is very low, rate frequency in 8 - 20hz ; the velocity modulation scope is wide, the lowest movement frequency lowers to 1hz, and the starting number of times is quite frequently, each hour reaches as high as 600 - 800 time, the impact shoulders in a big way, the overload capacity request is high

    針對這一情況本文對冶金輔傳用變頻輥道電機的設計進行了系統研究。首先對變頻器和變頻輥道電機的運行特性進行詳細分析，變頻器輸出的電壓波形諧波大，沖擊大，電壓上升率高達6600v / s ，是普通正弦交流電壓的20倍;軋機輔傳輥道對電機提出了十分嚴格的要求:其運行頻率很低，額定頻率在8 - 20hz ;調速范圍寬，最低運行頻率低到0 . 5hz ，起動次數相當頻繁，每小時高達600 - 800次，沖擊負荷大，過載能力要求較高。
  8. Since common management information systems are not suitable to deal with these spatial distributed data, it is needed to develop a field level geographic information system ( fis ), in order to meet the needs of field data processing and field information management

    由於這些數據一般都具有空間分佈上的特性，要分析與處理這些數據，普通的關系型數據庫已不能滿足需要，因此需要開發一種田間信息系統，或者稱之為農田地理信息系統，來對田間數據進行分析與處理，並對農田信息進行管理。
  9. The result of orthogonal experiment and secondary regression experiment on the bionic disk plows indicates that the bionic non - smooth partial sphere structure cell can decrease resistance by almost 30 % than common plow in the condition that the structure and distribution combine rationally. therefore, the bionic design and experiment research on disk plows is very significant

    仿生圓盤犁刀的正交試驗和二次回歸試驗結果分析表明，如果圓盤犁刀的仿生非光滑球冠結構單元的結構參數和分佈組合搭配合理，仿生圓盤犁比普通圓盤犁可減少阻力約30 ，因而本文對圓盤犁刀進行仿生設計與試驗研究是非常有意義的。
  10. To meet the demands for large space and flexible compartmentation of buildings, laminated vierendeel trusses are adopted in high - position transfer story structures. first the bearing characteristics are analyzed, in which reasonable stiffness ratio of the upper chord, middle chord, and lower chord is derived. then combined with an actual engineering model ( 1 8 similar ratio ), the static loading and pseudo - dynamic tests of two models for laminated vierendeel truss used in transfer story structures are conducted, in which one model adopts reinforced concrete, and the other adopts prestressed concrete and shape steel concrete. seismic behaviors are analyzed, including inter - story displacement, base shear - displacement skeleton curves, and equivalent viscosity - damping curves. a program is programmed to carry out the elasto - plastic dynamic analysis, and displacement time - history curves of the two models are derived. the test and analysis results show that the laminated vierendeel truss with prestressed concrete and shape steel concrete has excellent seismic behaviors. it can solve the disadvantages of laminated vierendeel trusses used in transfer story structures. finally, some design suggestions are put forward, which can be referenced by similar engineering

    為滿足建築物大空間和靈活隔斷要求，在高位轉換層結構中採用迭層空腹桁架結構.首先分析了其受力性能，得出了空腹桁架各構件合理的截面剛度以及布局形式.然後結合一實際工程，進行了兩榀迭層空腹桁架轉換結構模型（ 1 : 8相似比）的豎向荷載下靜力試驗以及擬動力試驗.其中一榀為普通混凝土迭層空腹桁架，另一榀配置了預應力和鋼骨混凝土，對比分析了兩模型的層間位移比、骨架曲線以及等效粘質阻力系數等抗震性能的比較，並進行了彈塑性動力分析.試驗和分析結果表明，配置預應力和型鋼混凝土的迭層空腹桁架轉換結構具有良好的抗震性能，可以成功地解決迭層空腹桁架作為轉換層結構所產生的弊端問題，最後對這類轉換層結構提出了相應的設計建議
  11. The author have studied data warehouse and olap and data mining, then discussed the relevant concepts, development status, system structure and implementation in details ; meanwhile, through studying the data model of university enrollment examination, integrating with data obtaining technology, multidimensional modeling technology and olap in data warehouse, designed a data mart of university enrollment examination and thus developed a data analyzing system of university enrollment examination based on model supporting decision and olap and data mining

    本論文對數據倉庫、聯機分析處理和數據挖掘技術進行了研究，並詳細介紹了有關的概念、發展狀況、體系結構和實現手段；同時，通過對普通高校招生考試的數據模型進行研究，結合數據倉庫中的數據獲取技術、多維建模技術設計了一個以普通高校招生考試數據分析為主題的數據集市，並在此基礎上綜合運用聯機分析處理技術、數據挖掘技術和模型輔助決策技術實現了一個招生考試數據分析系統。
  12. A common data acquisition card can be used on laboratory virtual instrument engineering workbench through designing the external interface between labview and common date acquisition card on the software design ; used the idea of the double buffer and direct memory access, a real time data acquisition and logging about the succession, big capacitance leakage current is realized ; a digital filter is designed to filter high frequency signals

    在軟體設計上，設計了與普通數據採集卡的介面，實現了在labview環境中應用普通數據採集卡的功能；運用雙緩沖和內存直接映射的設計方法實現對連續、大容量泄漏電流信號的實時採集和存儲；設計了數字濾波器對採集后的原始數據濾去高頻干擾。
  13. Along with the progress of drilling technology, many new types of bha such as steering motor assembly, dropping assembly with eccentric bend sub, dropping assembly with flexible connection are developed based on common building, dropping and holding assemblies. for using these bha, a new mathematical model is put forward for 3d static analysis of these types of bha under small deflection. and its weighted residual solution is given. the mathematical model includes ( 1 ) differential equations ; ( 2 ) boundary conditions at drill bit, stabilizer, bend angle, diameter change, tangential point and borehole wall ; ( 3 ) lateral forces and deflection angles of bit. the software based upon this method runs well

    為了更好地應用各種新鉆具，建立了適用於對普通下部鉆具、導向鉆具、帶偏心彎接頭和柔性接頭的下部鉆具進行三維小撓度靜力學分析的數學模型，包括（ 1 ）微分方程； （ 2 ）鉆頭、穩定器、彎角、變截面、切點和井壁的邊界條件； （ 3 ）鉆頭的側向力和鉆頭轉角.給出了該模型的加權余量解.用該方法編寫的軟體應用效果良好
  14. In creation of spherical panoramic, the technique using fish - eye lens to capture image is briefly studied, and the technique using digital camera is studied in detail. in the latter technique, spherical image mosaic is a key problem

    在球面全景圖生成方面，本文對使用魚眼鏡頭的技術作了簡單的介紹，重點討論了使用普通數字相機的球面全景圖生成技術。
  15. 4. security of a class of block ciphers based on chaotic maps against differential and linear cryptanalysis is studied. the results show that this kind of cipher structure is not good compared with some famous cipher structure such as cast - 256 cipher structure and common feistel structure

    對一類基於混沌函數的分組密碼結構gfs4 （ gfs8 ）的安全性做了評估，分析結果表明：從抵抗差分密碼分析和線性密碼分析的安全性與所需要的執行代價相比，這類密碼結構不如cast - 256型密碼結構和普通的feistel型密碼結構。
  16. The article does some research of the full text retrieval technology. 1 、 the article summarize the development of the web search technology in the domestic country and aboard. it will refer to not only the common document retrieval in the web, but also the query of concept information, hypertext information, multimedia information and the data mining

    本文對全文檢索技術進行了以下幾方面的研究： 1 、介紹了國內外檢索技術的發展過程，討論了普通文本檢索、概念信息檢索、超文本信息檢索、多媒體信息檢索、數據挖掘等的技術特點。
  17. This study was conducted to examine the interrelationship of 10 seed vigor traits in 12 wheat genotypes through variance, co - variance and path coefficient analysis, to determine broad - sense heritability, and to estimate genetic advance under selection. the genotypes showed significant difference for all traits, except for percentage of normal seedling. genetic correlation between conversion efficiency of seed reserve, electrical conductivity with other traits were not significant, showed that selection for any of them might be possible without hampering any other traits. however path coefficient analysis indicated that conversion efficiency of seed reserve, seed reserve utilization ratio have strong direct effect in affecting seedling weight, and that mean germination time has significantly negatively correlated in affecting gi. moderate to high estimates of broad - sense heritability, genetic coefficient of variation and expected genetic advance were obtained for electrical conductivity, germination index, mean germination time, seed dry weigh, seedling dry weigh, seed reserve depletion ratio indicating the possibility for improving these traits

    本研究利用12個普通小麥品種對10個種子活力性狀的遺傳變異和相關研究，表明除正常幼苗百分率外，其餘種子活力性狀在品種間均存在顯著的差異.種子貯藏物質轉換效率、電導率兩個性狀間及與其它性狀均無顯著的遺傳相關，因此對他們的選擇不會影響到其它性狀.通徑分析表明幼苗干重主要取決于種子貯藏物質轉換效率、種子貯藏物質利用速率;發芽指數主要由平均發芽時間決定.電導率、發芽勢、幼苗干重、種子干重、發芽指數、種子貯藏物質消耗比率6個性狀表現中到高的遺傳力、遺傳變異系數和相對遺傳進展，指明通過遺傳育種手段改良這些性狀是可能的
  18. In chapter 9 we summarize the whole paper, and explain the shortages of this paper and problems to further study. main conclusions of this paper are as follows : the first, state - owned funds have always been predominant in venture capital sources in china, and this caused the " government - operated model " which leads to excessive government ' s interferes and distorted venture capital contracts ; the second, limited partnership contract is better than incorporated company contract, because the former has obvious advantages in not only encouragement and controls, but also in investors " profits. however, this paper insists, incorporated company contracts will still be very popular in the near future because limited partnership still be illegal in most provinces of china ; the third, venture capitalists " share of profits in compensation clause of fundraising contracts is influenced by investors " attitude towards difficulties and obstacles of future investment

    本文研究的主要結論：第一，在我國風險資本來源中，政府風險資本一直居於主導地位，這造就了我國風險投資的「官辦官營」模式，使其契約機制從一開始就帶有「行政干預」的烙印；第二，有限合夥契約在約束機制、激勵機制、投資者收益三個方面都明顯優于公司制契約，因此是我國風險融資契約的發展方向，但由於有限合夥在我國受到法律限制，公司制契約在一定時期內仍是我國風險融資契約的主要形式；第三，融資契約報酬條款中的激勵系數受主體先驗概率影響，借鑒有限合夥契約，可對我國公司制融資契約進行改造與重構；第四，與債權契約、普通股契約相比，可轉換優先股契約可以有效緩解風險投資過程中的信息不對稱、降低代理成本，因此是我國風險投資契約的最優選擇。
  19. Secondly, we described the fundamental concepts and properties of group signature scheme and some general digital signatures that can be used to construct group signature amply, and presented a group signature scheme based on the integer factorization. thirdly, we explained the fundamental concepts and properties of authorized group signature in detail and propounded a secure authorized group signature based upon the discrete logarithm. finally, we illuminated electronic payment system in e - commerce and designed a simple and high secure electronic cash system with multiple banks based on group signature

    首先，對群簽名體制的研究背景、意義以及發展現狀進行了介紹;接著針對群簽名體制的基本概念和性質以及可用於構造群簽名的一些普通的數字簽名體制進行了詳細描述，並基於大整數分解問題給出一個群簽名方案;同時還對授權群簽名的基本概念和必須滿足的基本性質進行了詳細說明，並且基於離散對數問題給出一個安全的授權群簽名方案;最後，對電子商務中的一個重要組成部分? ?電子支付系統進行了詳細的闡述，利用群簽名技術設計出一個簡單、高安全性的多銀行電子現金系統方案。
  20. In contrast with data communications, which are not usually subject to strict delay constraints and can therefore be handled using network protocols that uses retransmission to ensure error - free delivery, real - time video is delay sensitive and cannot easily make use of retransmission

    與普通的數據傳輸不同，視頻通信受嚴格的延時限制，不能通過重傳機制保證無差錯的傳輸。預測和可變長編碼的使用也使得碼流對誤碼或數據包丟失更加敏感。
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