末定系數 的英文怎麼說

中文拼音 [mòdìngxìshǔ]
末定系數 英文
undetermined coefficient
  • 末 : Ⅰ名詞1 （東西的梢;盡頭） tip; terminal; end 2 （非根本、非重要的事物） nonessentials; minor detai...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. According to the system technology require, adopting singlechip realize open loop digital control of hdclsm ; using v / f conversion and complex key - control method realize digital setting of system parameter, such as velocity ; using micro - stepping control insure the motor running more smoothly ; adopting debasing speed control method to eliminate the mechanical impact of distance termination effectively ; at the same time, analyzing main power circuits drive circuit and protect circuit of system, completing hardware design and facture and software programming and debugging ; at last, making a whole test in hybrid rotary step motor. the experiment result indicates that this control system reaches the qualities required and run smoothly also

    根據系統技術要求，採用單片機實現了混合式直流直線步進電動機的開環數字控制；利用v f變換和復合鍵控方法實現了系統轉速等參數的數字設定；利用細分控制技術保證了電機運行的平穩性，並進行了波形分析和理論研究；採用單片機軟體降速控制策略解決直線步進電機行程末端的機械沖擊問題；同時對主功率電路、驅動電路和系統保護電路進行了分析，完成了硬體設計、製作和軟體編程、調試，最後在混合式旋轉步進電動機上進行了全面測試。
  2. Sicp / al matrix composites, with 5, 15 and 25 % volume fraction of sic particles, were prepared by vacuum hot - pressing sintering processing in this paper. based on mechanics properties, sem observation and energy dispersive x - ray analysis, the interface reaction phenomenon of sicp / al composites made by vacuum hot - pressing sintering, as well as the reinforcement and fracture mechanisms of this composite were analyzed. the dynamic responses of sipc / al composites were studied by a split hopkinson high - speed pressure bar impact system which strain rate was from quasistatic state strain rate ( 3. 3 10 - 3s - 1 ) to dynamic state strain rate ( 5. 2 103 s - 1 )

    本研究以武裝直升飛機防護裝甲材料為研究對象，採用真空熱壓粉末冶金燒結工藝制備了含sic顆粒體積分數分別為5 、 15和25的sic顆粒增強鋁基復合材料，結合其力學性能、掃描電鏡和界面微區能譜分析結果，分析了sic _ p al復合材料的真空燒結過程中的界面現象，以及材料增強和斷裂機理，並利用hopkinson高速壓桿沖擊實驗系統對其從靜態到動態（應變率為3 . 3 10 ~ （ - 3 ） s ~ （ - 1 ） 5 . 2 10 ~ 3s ~ （ - 1 ） ）的壓縮破壞響應進行了研究，分析了不同體積分數sic _ p al復合材料高應變率壓縮載荷下，材料的變形和微觀損傷機理，以及利用高速沖擊空氣炮測定了改復合材料制備剃度復合板的穿透性能。
  3. The voltage of lithium - intercalation reaction, impedance and structural stability of intercalation - type cathode material were analysed and calculated. theoritical results show that the reaction voltage depends on the content of lithium and the bond energy, and that the key ways to lower the electrode impedance are to increase the electronic conductivity of the electrode and the diffusion coefficient of lithium ion in the host and to decrease the size of powder. in addition, the thermal stability of lithium - insertion structure can be improved by using crystallographic co - lattice theory and doping treatment

    本文從嵌入式陰極材料的嵌鋰反應的電壓、阻抗及結構穩定性的分析和理論計算著手，得到了電壓取決于基體中各種離子間的鍵能及鋰含量、降低電極阻抗的關鍵是提高電子型導電性和li ~ +在基體中的擴散系數及減小粉末粒度的理論依據及其利用晶體的共格原理和摻雜改性的方式來提高材料嵌鋰結構的熱穩定性的設計思路。
  4. The researching work include three aspects : 1 ) after selecting primary material system, the polymer coating process were optimized. the polymer - coated high - temperature alloy powder has been developed on the basis. 2 ) based on sintering and orthogonal experiments, the influence of the prototyping elements on prototyping properties have been initially studied, and the optimal prototyping parameters of this material has been obtained finally

    本文主要研究內容為： （ 1 ）選擇合適的包覆材料體系，對鉬粉的包覆工藝進行了優化實驗，在此基礎上開發了適合於激光燒結成型用覆膜高溫合金粉末材料； （ 2 ）通過激光燒結成型實驗，運用正交實驗方法，系統地研究了燒結工藝參數對成型質量的影響關系，在此基礎上確定了覆膜高溫合金粉末最佳燒結成型工藝參數； （ 3 ）對激光成型件進行了后處理工藝實驗，得到了優化的后處理工藝規程，並製作了合格的后處理樣件。
  5. The developments are researched in main introduction dissertation research aim, sense, substance and means and home and abroad to first section introduction ; human resource development administration fundamental theory together with practice foundation were elaborateed to second section. and imports wu gang ' s human resource and administer at some inspirations that obtain ; third section is by means of the greats quantity data examples, and the presentsituation to analyse wu gang ' s human resource development reaches the problem that is through amount up the quality, and demonstrated to create fundamental reason of problem along with settlement problem at some considerations ; the four bibliographic categories branch was depictd wu gang ' s continueing development target program from the end of the tenth - five - year plan to 2010, and utilizes contemporary labour power resources development administrations idea and mathematical model. and is living to adjust wu gang ' s human resource to be underway on the systematic conformity base

    第一部分緒論，主要介紹論文研究的目的、意義、內容和方法及國內外研究動態；第二部分闡述了人力資源開發管理的基本理論與實踐依據，並導入武鋼人力資源管理得出的幾點啟示；第三部分通過大量的數據例證，從數量到質量分析了武鋼人力資源開發的現狀及存在的問題，論證了造成問題的根本原因以及解決問題的幾點思考；第四部分描述了武鋼到「十五」末至2010年的可持續發展目標規劃，並運用現代人力資源開發管理的思想和數學模型，在對武鋼人力資源進行系統整合的基礎上，制定了武鋼人力資源目標規劃；第五部分闡述了武鋼人力資源開發的戰略和對策：改革管理、人本第一，結構調整、開發潛能，目標培養、重點開發，知識更新、整體開發，績效考核、激勵創造，利益捆綁、留住人才。
  6. Two crucial technologies in instantaneous negative pressure wave method are analyzed in this dissertation, then a means is presented which can eliminate the dynamic response time diversity between pressure sensors in the beginning and end of the pipeline, by adopting gps to unify the system time between data collecting systems in two ends

    分析了負壓波泄漏定位方法的兩項關鍵技術，提出了消除首末、端壓力傳感器動態響應時間差的方法，採用gps來統一首末端數據採集系統的系統時間；使定位更加準確。
  7. The conclusions are as follows : ( 1 ) high - pressure water - atomization can be used to produce a pre - alloyed steel powder with high apparent density, high green strength, size - stability after sintering and low hydrogen - loss content ; ( 2 ) the higher smelting temperature and / or water pressure, the finer particle size of steel powders ; ( 3 ) when the atomization angle holds in a reasonable value ' s range the obtained powder will have a better particle size distribution ; ( 4 ) an optimum atomization technological parameters : liquid steel flux, water pressure and water prick angle was obtained ( 5 ) reduction variables ( temperature, holding time, material - bed ' s thickness and reducing gas flux ) have a significant effect on the particle agglomeration and properties of final powder was given ( 6 ) different alloying methods were developed to modify properties of ferrous powder materials and hence to broaden its applications in ferrous powder metallurgy industry

    本文系統研究了水霧化預合金鋼粉生產工藝及合金化方法對鐵基粉末冶金材料性能影響，詳細研究了冶煉、霧化、還原工藝參數對預合金鋼粉化學成份和物理性能影響，並得出如下結論： （ 1 ）採用高壓水霧化技術可用於生產高密度、高強度、尺寸穩定性的低氫損含量的水霧化預合金鋼粉。 （ 2 ）冶煉溫度越高，高壓水壓力越大，所得生粉顆粒粒度越細。 （ 3 ）水錐角調整在一個適當角度范圍內可獲得粒度組成較好的生粉。
  8. Plasma characteristics of a rf ion source are investigated by emission spectroscopy. the spatiotemporal spectral line intensities of the first three atomic lines in hydrogen bahner series ( = 656. 28, 486. 13, 434. 05nm ) of rf ion source plasma, are measured with calibrated optical multichannel analyzer ( oma ). some plasma parameters, including electron temperature, hydrogen atom density and hydrogen ion density, are calculated and analyzed using partial local thermodynamic equilibrium ( plte ) theory and abel transform

    實驗採用絕對定標后的光學多道分析系統（ oma ）測定了離子源等離子體不同時間和空間位置的氫原子巴耳末譜線系中前三條譜線（ = 656 . 28 ， 486 . 13 ， 434 . 05nm ）的強度，並採用plte的理論和abel變換方法，計算出了高頻離子源等離子體的電子溫度、氫原子濃度、氫離子濃度等參數在放電的不同階段和徑向分佈情況，並進行了簡要分析。
  9. Scientific and statistical databases ( ssdb ) have following characters, firstly, relation schema is relatively stable, and each attribute has limited candidate values with high redundancy, secondly, new arrival data only append to the end of current data area and do not change the exist data, thirdly, every relation is made up of plenty of attributes, but majority of queries only relative with less attributes and most queries are read - only queries

    科學與統計數據庫（ scientificandstatisticaldatabase ， ssdb ）具有如下特點: （ 1 ）關系的模式穩定、屬性值的值域有限、數據冗餘大; （ 2 ）新產生的數據只追加到當前數據末尾而不更新已有內容; （ 3 ）每個關系都由大量屬性組成，但大多數查詢只與少數幾個屬性相關且多為只讀操作。
  10. Bet determination of the specific surface area of powders - recommendations for methods of determination of metal surface area using gas adsorption techniques

    粉末表面系數的測定.第4部分:使用氣體表面吸附
  11. Deduce the fb formula for tsm, combined with the idiographic rule, a kind of mathematical model for capture probability is established, and the relationship between capture probability and scan parameter is analyzed, including the low speed scan and the high speed scan. and studied the confirmation for the best capture rule

    本文研究工作主要包括下述方面內容：推導了末敏子彈占空比的計算公式，並結合具體的捕獲準則，建立了捕獲概率數學模型，分別分析了高、低速掃描條件下的捕獲概率與掃描參數的關系，研究了最佳捕獲準則的確定。
  12. As a result the relatively reasonable basic data is designed and mathematics model on the firing effectiveness is established. then the c language program is used to solve the model and reasonable data index and relative theory on the basis of the large number of the simulation computation of the set target are obtained. the paper creatively puts forward the theory of the ship - borne artillery terminal guided projectile system and establishes the mathematics model to evaluate its firing efficiency, and creatively discusses the use of the terminal guidance system in the sea - crossing and island - landing battle, providing a theory basis for the future military struggle against taiwan

    本文的研究針對末制導炮彈這種新型的精確制導武器系統的特點，以炮兵射擊理論為基礎，以現代戰場上重要的點目標和集群裝甲目標為研究對象，設定了比較合理的基礎數據；建立了射擊效能的數學模型；採用統計試驗法，運用c語言設計計算程序對模型進行求解；對設定的重要目標，進行了大量的模擬計算分析，得出了比較合理的數值指標和相關結論；對其作戰應用進行了探討性研究，創造性地提出了船載炮發射末制導炮彈武器系統的新技術，建立了評定其射擊效率的數學模型；創造性地探討了末制導炮彈武器系統在渡海登島作戰中的應用，為未來戰場上我精確制導武器的使用，做好對臺軍事斗爭準備提供了理論依據。
  13. Powder - metallurgy copper friction materal has enough and steady frictional factor. it can perfectly coexist with coordination material. it has good anti - bite, thermal conduction, wear - proof and corrosion - proof

    銅基粉末冶金摩擦材料，具有足夠和穩定的摩擦系數，能與對偶材料很好的共存，具有良好的抗咬合性和導熱性，耐磨、耐腐蝕。
  14. According to the problem that grating scale hardly achieves high resolution when in high speed and the characteristic of high speed high precision system, this paper presents a cross dimension displacement measuring method based on dual grating scales dual measuring, the counting values of dual grating scales switch and merge

    針對高速高精度定位系統的運動特性及光柵尺測量高速位移時難以實現高分辨力的問題，本文提出了適合高速且實現系統末端點高分辨力位移測量的新方法基於雙光柵尺雙重計數、切換與合成的跨尺度位移測量方法。
  15. We separate the human capital structure type region into three kinds : high human capital, high scatter of region - a, middle rank human capital, low scatter of region - b and low human capital, high scatter of region - c. we find that this separation is identical to the division of east, middle and west region. then we use the outcome of human capital gini coefficient, accoding to the proportion of the state ’ s fdi, fixed assets investment, imports and exports in the whole country, and some other factors to construct a region economy growth model

    其次，本文根據人力資本基尼系數的測算結果，同時考慮該省（市、區） fdi佔全國的比重、固定資產投資額佔全國的比重、進出口總額佔全國的比重、年末人口佔全國的比重、二、三產業增加值占該省（市、區）生產總值的比重、年末從業人數佔全國的比重和人口文化素質指數幾個變量建立了區域經濟增長模型，並運用面板數據，對模型進行檢驗。
  16. The tactical missile seeker handover accuracy from midcourse to terminal guidance is researched. the small perturbation method is proposed to analyse error sensitivity of the seeker presetting parameters from error sources. firstly, the terminal guidance seeker presetting parameters are computed, based on the equations of a surface - to - air missile movement and a target movement. then the seeker presetting unaccuracy due to the command guidance radar measurement errors is also computed. it can be seen that the seeker presetting errors increase rapidly when the missile is close to the target, which leads to an important conclusion that the late seeker handover from midcourse to teminal guidance should be avoided

    研究復合制導的戰術導彈中末制導交班的導引頭預定精度問題.提出用小擾動法分析導引頭預定參數對誤差源的誤差敏感性關系.以中遠程防空導彈為例，結合導彈運動方程組和目標運動模型，計算了中末制導交班的導引頭預定參數，並計算了在制導站雷達測量誤差下的末制導導引頭預定參數的計算精度.可知，導引頭定位參數的計算誤差隨著彈目距離的接近而顯著增大，得到中末制導交班不能太晚的重要結論
  17. Abstract : the tactical missile seeker handover accuracy from midcourse to terminal guidance is researched. the small perturbation method is proposed to analyse error sensitivity of the seeker presetting parameters from error sources. firstly, the terminal guidance seeker presetting parameters are computed, based on the equations of a surface - to - air missile movement and a target movement. then the seeker presetting unaccuracy due to the command guidance radar measurement errors is also computed. it can be seen that the seeker presetting errors increase rapidly when the missile is close to the target, which leads to an important conclusion that the late seeker handover from midcourse to teminal guidance should be avoided

    文摘:研究復合制導的戰術導彈中末制導交班的導引頭預定精度問題.提出用小擾動法分析導引頭預定參數對誤差源的誤差敏感性關系.以中遠程防空導彈為例，結合導彈運動方程組和目標運動模型，計算了中末制導交班的導引頭預定參數，並計算了在制導站雷達測量誤差下的末制導導引頭預定參數的計算精度.可知，導引頭定位參數的計算誤差隨著彈目距離的接近而顯著增大，得到中末制導交班不能太晚的重要結論
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