難點 的英文怎麼說

中文拼音 [nándiǎn]
難點 英文
aporia; difficult point; difficulty
  • 難 : 難Ⅰ形容詞1 （做起來費事的） difficult; hard; troublesome 2 （不容易; 不大可能） hardly possible 3...
  • 點 : Ⅰ名詞1 （液體的小滴） drop （of liquid） 2 （細小的痕跡） spot; dot; speck 3 （漢字的筆畫「、」）...
  1. The thesis has summarized the development of the oblique - pull bridge, its construction technology and the importance of bridge construction control, then has introduced project general situation, and has narrated detailed regulation, organization construction, the major work and difficult part of this bridge construction control. the following is the key part of this thesis, firstly, it has introduced the experiment work of early stage, structural calculation and its theoretical result : the absolute altitude of each operating mode, the absolute altitude of building mould in each section and the absolute altitude after pouring concrete ; then, it has discussed the method and content of the line shape control of the main beam, actual absolute altitude of building mould is put forward, and it has described the method of structural stress monitoring, how to arrange measure point and collect data, and how to analyze data. it has also narrated the method of rope force detection and structural temperature inspection

    本論文在總結了斜拉橋的發展及其施工工藝，並指出了橋梁施工控制的重要性之後，簡要的介紹了工程概況，敘述了炳草崗金沙江大橋監控細則、組織機構及監控的主要工作和難點部分；論文的核心部分，在介紹了炳草崗金沙江大橋施工控制與監測工作的前期實驗工作和施工各工況標高、各節段支模標高、澆注混凝土后的標高的結構計算和其理論計算結果之後，詳細論述了主梁的標高線形控制方法和內容，實際支模標高的提出，結構應力監控的方法、布點、測讀及其對測讀數據的合理分析方法，索力檢測和結構溫度監測的方法。
  2. And then facing the problem of the channel estimation of the adaptive modulation system, we conclude out the channel estimation algorithms on maximum likelihood ( ml ) estimation and maximum a posteriori ( map ) estimation under the condition of flat fading channel and selective fading channel in detail. to meet flat fading channel, we simulate the relationship of the ratio between the error covariance in map estimation and ml estimation and pilot symbol message length. the conclusion can be drawn from these results

    接著，對自適應調制系統中的通道估計問題難點，詳細推導了平衰落通道條件下和選擇性衰落通道條件下最大似然（ ml ）估計和最大后驗概率（ map ）估計演算法，針對平衰落通道，我們模擬了map估計和ml估計的方差與導頻符號長度的關系，模擬結果表明，錯誤方差受多譜勒頻率的變化影響最大，並且對實際的自適應調制系統，導頻符號長度的取值超過20個符號長度時， map通道估計明顯優于ml通道估計。
  3. The realization of quick acquest under very low snr and big frequency shift is one of the key problems of lpi radar. we designed a new receiver which needs less computation spend without any decline of the performance of the radar

    如何在較低輸入信噪比和較大頻偏的條件下實現擴頻碼快速捕獲是碼同步的難點，本文在不損失系統性能的基礎上，設計了一種結構簡單的接收機實現方案。
  4. When measuring the magneto performance parameter ， we find that the instrument which use to measure voltage and current is still the simple voltmeter and amperemeter in the national standard ， and the form of wave that we observed is anomaly. based on the measure principles, it obviously ca n ' t be used to do quantitative analysis ； because the discharge process of ignition system is quite complex, accompanies with very strong electromagnetism interference, and the ignition current and voltage are variable ， it make the measure of ignition energy become a difficult thing of ignition system performance detection

    在磁電機常規測量時，發現在國家標準中用於測量電壓、電流的儀器仍然是普通的電壓、電流表，而觀測到的波形多為不規則的形狀，根據測量原理，顯然不能用其來做定量的分析；由於點火系統的放電過程比較復雜，伴隨著很強的電磁干擾，點火電流、點火電壓都是變量，使得點火能量的測量成為點火系統性能測試的一個難點。
  5. In view of bearing capacity of the elastoplastic theory analysis, the author made a comparison between the achieved bearing capacity limit load pi / 4 of round base ( space problem ) and the limit load pi / 4 of bar groundwork foundation design ( plane problem ) from soil mechanics at home and abroad as well as foundation criterion, and explained why the value of formula in present design criterion from soil mechanics is inclined to be conservative. in the light of the author ' s many years experience of vibration test on the spot and the research work of relevant projects, the author worked over the dynamic pile testing of the bearing capacity of foundation and batholith, and gathered the parameter of dynamic analysis and testing. the author also talked over the difficult point of pile foundation design criteria in present batholith engineering world, i. e. the confirmation of batholith bearing capacity of pile end, from the following aspects : a ) confirmation of single axis counter - pressure strength of rock in house ; b ) f. e. m calculation of elastoplastic model ; c ) calculation of soil mechanics ; d ) deep well load test

    然後，對巖土工程領域至今尚未解決，甚至不為人注意的考慮地基變形的地基承載力問題進行了實用化的探討，提出了考慮地基變形的地基承載力上程計算方法；對基於彈塑性理論分析的地基承載力國內尚未見報道的空間問題得到了圓形基礎（空間問題）的承載力界限荷載p _ （ 1 / 4 ） ，並與國內外土力學專著及地基基礎設計規范中的條形基礎（平面問題）的界限荷載p _ （ 1 / 4 ） ，進行了對比，從而定量上解釋了目前設計規范引用土力學承載力公式值偏於保守的這一情況；根據本文作者多年從事現場地基工程振動試驗及相關課題的研究工作，本文以截頭錐模型模擬地基，對地基（巖基）承載力的動測法進行了研究，為各類地基（包括巖基） ，匯總了動力分析和檢測川的參數：針對日前巖土工程界應用樁基設計規范中的難點? ?樁端巖基承載力的確定問題，從巖石室內單軸抗壓強度確定、基於彈塑性模型的有限單元法計算、土力學計算及深斤載荷試驗四方面進行了深入討論；本文作者根據多年現場載荷試驗的工程實踐，對深井荷試驗裝置的核心部分? ?反力裝置，設計了側壁支撐反力加載系統，該加載系統具有實用、簡便、穩定及安個等優點。
  6. From the whole view, the difficulty of speciality subjects was thought to be moderate, even though these subjects sometime seemed to be too easy and could not reflect the knowledge broadness of subject

    公共課程考試是碩士招考的最難點；專業考試總體上比較科學、合理的，但存在難度偏易、覆蓋面狹窄等問題。
  7. Quadrate lobectomy was performed in 11 cases, left external lobectomy in 5 cases, left lobectomy in 4, right lobectomy in 3 and caudate lobectomy in 6

    方法總結2002年1月2006年6月手術治療的31例肝門部膽管癌的臨床資料、手術難點與對策。
  8. Currently combination of physical, chemic and biological process was more applied, which is difficult to coloring removal and sludge disposal

    目前，通常採用的是物理、化學和生物化學法的組合工藝，但色度的去除和污泥的處置仍是難點。
  9. 3. as to vehicle - bridge system coupling vibration, this difficulty in engineering industry, it was abstractly summarized in this thesis, and introduce a method to establish and resolve equations about such coupling vibration, bring forward a flow chart to write correlative software ; with the help of ansys, make out some work about preparatory simulation, so as to research basic point of chicle - bridge system coupling vibration

    3 、對車橋耦合振動這一業內的難點進行了理論上的分析，引入了一種建立和求解車橋耦合振動系統方程的較為典型的方法，提出了一份自行編製程序的流程簡圖；借用ansys軟體對該橋做了車橋耦合振動的初步模擬計算，探索車橋共振的基本特點。
  10. The sensitive time lag theory circumvents the problems inherent in the description of unsteady combustion by use of a simplified two-parameter response function.

    敏感時滯理論用簡化的雙參數響應函數來描述不穩定燃燒，從而繞過了某些固有的難點。
  11. It concludes that the class action is not a fit form of the action for the victims and the court involved in such a suit

    文章認為，證券民事訴訟的特點和難點使其較難為傳統民事訴訟機制適應，因而必須建立起適應其特點的民事訴訟機制。
  12. In the process of producing terebinth and colophony, it ' s difficult to measure the amount of terebinth in the turpentine on line, but it ' s the key to realize automatic control for the whole process

    在蒸汽蒸餾連續法生產松香和松節油的過程中，澄清階段的松節油含油量大小的在線檢測一直是一個難點，也是整個生產過程實現自動控制的關鍵。
  13. The difficulty involved in conceptualizing new software applications varies from project to project

    新軟體應用程序概念化的難點因項目的不同而不同。
  14. The difficulties lie hi that there is any disturbance of yawp, character conglutination, and character rupture etc. the paper first presents some methods that adopt prior knowledge of the license plate, perpendicular projection, and minimum character area and so on

    車牌圖像的單字元分割即把車牌的整體區域分割成單字元的區域，以便后續進行識別，車牌字元分割的難點在於噪聲和字元粘連、斷裂對分割的影響。
  15. The fast discrimination between magnetizing in - rush current and fault current is a difficulty in transformer protection presently. to solve this problem, second harmonies restraint and dead angle are used widely in practical application

    勵磁涌流的快速鑒別仍然是當前變壓器保護面臨的一個難點，在實際應用中廣泛採用二次諧波制動原理和間斷角原理來鑒別勵磁涌流。
  16. We are looking at a problem and trying to solve it and it seems there is a deadend, an “ aporia ”

    我們考慮一個問題並試圖解決它的時候，似乎走進了死胡同，一個「難點」 。
  17. In mbo, the definitude of the buying parties, the pricing of the non - transferable state - owned shares and the buying capital financing are the three key questions

    在上市公司管理層收購中，收購主體的設定、非流通股的定價和收購資金的來源是三個難點問題。 1 .關于收購主體的設定。
  18. The difficulties and outlet of i ' m plementing independent directorship

    推行獨立董事制度的難點及出路
  19. Work out dividend or divisor according to the rules

    難點：判斷求除數或被除數用哪個關系式
  20. It treatisedespecially new request of howff of new times, the nodus and essentiality of landscape creativity

    特別是對新時紀住宅的新要求、景觀創新的難點、重要性進行了論述。
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