精確時計 的英文怎麼說

中文拼音 [jīngquèshíjì]
精確時計 英文
clock
  • 精 : Ⅰ形容詞1 （經過提煉或挑選的） refined; picked; choice 2 （完美;最好） perfect; excellent 3 （細）...
  • 確 : 形容詞1. （符合事實; 真實） true; reliable; authentic 2. （堅固; 堅定） firm
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 計 : Ⅰ動詞1 （計算） count; compute; calculate; number 2 （設想; 打算） plan; plot Ⅱ名詞1 （測量或計算...
  • 精確 : accurate; exact; precise
  • 時計 : chronometer; 時計差 chronometer correction
  1. The staple conversation on the farms around was on the uselessness of saving money ; and smock - frocked arithmeticians, leaning on their ploughs or hoes, would enter into calculations of great nicety to prove that parish relief was a fuller provision for a man in his old age than any which could result from savings out of their wages during a whole lifetime

    附近農莊上常談的主要話題是攢錢沒有用處身穿粗布罩衫的數學家們，倚著鋤頭或者犁歇息時，就會開始精確地計算，來證明人老后教區提供的全額救濟金，比一個人從一生中掙的工資中積攢起來的錢還要更充足。
  2. Finally, when in orbit round the earth, the calculators calculate exactly when to fire the retro-rocket to effect re-entry.

    最後，在圍繞地球的軌道運行的時候，計算機會精確地計算出應該在什麼時候發射制動火箭以重返大氣層。
  3. Today, athletes are using stopwatches to record time accurately

    到了今天，運動員用馬表來精確的計時呢。
  4. Used by system and mechanical designers to accurately design, route, document and manufacture complex piping systems while optimally reusing designs for dramatic time savings and improvements in productivity

    幫助系統與機構設計者精確設計、布線、生成文檔和製造，針對復雜的管路系統，達到最佳的設計重用，大幅度節省時間提高生產效率。
  5. In the hogging condition, double bottom and the side shell remain the ultimate bucking strength, deck and upperwing tank remain the yield stress, and the other parts keep elasticity. then the key to calculate the ultimate strength of ship hull girders is to ascertain the ultimate bucking strength of the stiffened panels. in this regard, the developed formulation is designed to be more sophisticated than previous simplified theoretical method for calculating the ultimate strength of stiffened panels under combined in - plane bending and lateral pressure. fabricatio n - related initial imperfections ( initial deflections and residual stresses ) are included in the panel ultimate strength calculation as parameters of influence. all possible collapse modes involed in collapse of stiffened panels, including overall buckling collapse, column or beam - column type collapse, tripping of stiffeners and local bukling of stiffened web are considered

    確定了船體梁整體破壞時的剖面應力分佈之後，關鍵在於確定板架的極限屈曲強度。本文充分考慮了在縱向彎曲、橫向壓力作用下加筋板可能發生的幾種破壞模式，即板架的整體屈曲破壞、樑柱形式的破壞、筋的側傾、腹板的屈曲並同時考慮了初始焊接殘余應力、初撓度的影響，使其更精確的計算加筋板的屈曲強度。對于加筋板中加強筋腹板的局部屈曲，採用解析法推導出筋的腹板的撓度方程及其邊界條件，求解相應的方程，從而計算出腹板的局部屈曲應力。
  6. According to the request of this subject, we have developed the system hardware and software for the slave device and the inspection software running on the pc. in this paper all of the followings is illustrated detailedly, such as the research on the principles of measurement and its realization, three means of water - level measurement that are separately based on photo electricity coder, pressure sensor and potentiometer ; selection of the microchip, we choose an advanced integrated soc ( system on chip ) microchip c8051f021 as the main controller ; realization of signal sampling, processing and its conversion in the mcu ; application of high precision 16 bits adc cmos chip - - ad7705 in our system, designing its interface with the microchip and relevant program ; using a trickle charge timekeeping chip ds1302 in the system which can provide time norm and designing of its i / o interface and program ; additionally, a 4 ~ 20ma current output channel to provide system check - up using ad421. in the system, ad421, ad7705 and the microchip compose spi bus ; to communicate with the master pc, here we use two ways which are separately rs232 and rs485 ; moreover, there are alarm unit, keyboard unit, power supply inspection unit and voltage norm providing unit in the system

    針對研製任務的要求，課題期間研製了下位機系統硬體和軟體，開發了上位機監控軟體，其中所作的具體工作包括：測量原理的研究和在系統中的實現，在本次設計中用三種方法來進行水位測量，分別是旋轉編碼器法、液位壓力傳感器法和可變電阻器法；主控晶元的選擇，我們選用了高集成度的混合信號系統級晶元c8051f021 ；實現了信號的採集和處理，包括信號的轉換和在單片機內的運算；高集成度16位模數轉換晶元ad7705在系統中的應用，我們完成了它與單片機的介面設計及程序編制任務；精確時鐘晶元ds1302在系統中的應用，在此，我們實現了用單片機的i o口與ds1302的連接和在軟體中對時序的模擬，該晶元的應用給整臺儀器提供了時間基準，方便了儀器的使用；另外，針對研製任務的要求，還給系統加上了一路4 20ma模擬信號電流環的輸出電路來提供系統監測，該部分的實現是通過採用ad421晶元來完成的，本設計中完成了ad421與單片機的spi介面任務，協調了它與ad7705晶元和單片機共同構成的spi總線系統的關系，並完成了程序設計；與上位機的通信介面設計，該部分通過兩種方法實現： rs232通信方式和rs485通信方式；系統設計方面還包括報警電路設計、操作鍵盤設計、電源監控電路設計、電壓基準電路的設計。
  7. International journal of computational geometry applications, 2001, : 105 - 144. 8 piegl l, tiller w. the nurbs book

    如此，參數化的表達能精確地計算曲面的頂點，而同時，隱示表達能直接判斷出物體的內部或外部。
  8. This paper deals with the problem of crosstalk mitigation at both methodological and algorithmic levels. noting that intermediate operations between global routing and detailed routing are very effective in crosstalk estimation and reduction, the authors propose to incorporate several intermediate steps that are separated in traditional design flow into an integrated routing resource assignment stage, so that the operations could easily cooperate to fully exert their power on crosstalk reduction. an efficient priority - based heuristic algorithm is developed, which works slice by slice

    在布線的各階段中，總體布線有較大的靈活性，但對各區域或信號線上的串擾難以估計詳細布線可以精確地計算串擾，但靈活性太小，往往出現反復拆線重布，難以達到設計收斂相比之下，總體布線和詳細布線中間的階段既有一定的靈活性，又可以相對準確地計算噪聲，是解決串擾問題的理想時機。
  9. Let f is a circularly symmetric function, with constructing a positive real function and using integral method, the difference of the modular of successive coefficients of k symmetric functions of circularly symmetric functions is also obtained, which is a sharp estimate

    當f為園對稱函數， = 1 / k （ k = 2 ， 3 ， … ）時，通過構造一個正實部函數，利用積分方法，得到了k次圓對稱函數相鄰系數模之差的精確估計。
  10. Ibam ( intelligent battery monitor ) is an advanced battery monitor for laptops, which uses statistical and adaptive linear methods to provide accurate estimations of minutes of battery left or of the time needed until full recharge

    是為筆記本電腦提供的一個高級電池監視器，它使用統計信息和自適應線性方法來精確估計電池所剩電量的分鐘數，以及還需要多長時間可以允滿電。
  11. Ibam - ibam ( intelligent battery monitor ) is an advanced battery monitor for laptops, which uses statistical and adaptive linear methods to provide accurate estimations of minutes of battery left or of the time needed until full recharge

    是為筆記本電腦提供的一個高級電池監視器，它使用統計信息和自適應線性方法來精確估計電池所剩電量的分鐘數，以及還需要多長時間可以允滿電。
  12. A fast and accurate algorithm to estimate the frequency of a coherent pulse sinusoid is presented in chapter 3. it is based on the autocorrelation iterative method, and the simulation results show that for the lower snr, this algorithm can accord with the request of the soplat ’ s precision and less computational complexity. therefore, it ’ s a promising algorithm for practical application

    在對正弦脈沖信號的頻率估計中，第三章在總結、比較前人演算法的基礎上，選擇了基於自相關迭代的頻率精確估計演算法，並進行模擬分析，結果表明，該演算法在較低信噪比時，可以達到單站無源定位所要求的估計精度，且運算量小，具有廣闊的應用前景。
  13. The present methods for testing the large - scale corpus segmentation have the following faults : a. it is difficult to exactly estimating the variance of population ; b. the sampling quantity is too large to test the corpus segmentation. to solve the given problems, we put forward the testing method based on clustering, which sorts the sample of corpus into many group by clustering them

    語料庫分詞質量的評價問題是漢語語料庫的特有問題，已有的簡單隨機抽樣的方法，當語料庫規模變大時，無法精確估計分詞質量評價中語料庫樣本的總體方差，同時，為了保證檢驗的精度，傳統抽樣方法的檢驗費用太高。
  14. Abstract : an algorithm of minimizing the number of buffers under certain delay constraint with accurate delay models is presented. given a two - terminal net, the algorithm can minimize the total number of buffers inserted to meet the delay constraint. a high order delay model is applied to estimate interconnect delay and a nonlinear delay model based on look - up table is for buffer delay estimation. the experimental results show that the algorithm can efficiently achieve the trade - offs between number of buffers and delay, and avoid needless power and area cost. the running time is satisfactory

    文摘:提出了在精確時延模型下，滿足時延約束的緩沖器數目最小化的演算法.給出一個兩端線網，該演算法可以求出滿足時延約束的最小緩沖器數目.運用高階時延模型計算互連線的時延，運用基於查找表的非線性時延模型計算緩沖器的時延.實驗結果證明此演算法有效地優化了緩沖器插入數目和線網的時延，在二者之間取得了較好的折中.演算法的運行時間也是令人滿意的
  15. With three assumptions of the conventional effective length approach discarded, a new approach is proposed by which column effective length considering inter - story interaction can be obtained in un - braced two - story or three - story frames

    在放棄了傳統計算長度系數法的三個不合理假定后，本文提出了兩層和三層框架失穩時，考慮層間支援的框架柱計算長度的很精確的計算方法。
  16. Finally according to the load - capacity superposition concept, a simplified design equation for determination of the load capacity of circular composite columns with h - shaped and box - shaped structural steel is proposed. through comparison with the accurate computer - based method, it is found that the proposed simplified equation is accurate enough and can meet the requirement of practical applications

    同時基於承載力疊加的概念，提出了配置工字型和箱型結構鋼的圓形截面組合柱在單向和雙向偏壓荷載下的承載力簡化計算公式，通過與精確的計算機數值迭代方法的比較發現，當荷載偏心較小時該簡化計算公式具有足夠的準確度，能夠滿足工程應用的要求。
  17. In the calculating process. the function of liquid proportion control was discussed. especially to the synchronic control system and the dynamic character of synchronic error and the motor circuit. lt also discussed the relationship between the hydraulic system parameter and the transmission system. in the transmission unit. the mechanical function of main parts has been optimized and calculated. good results gotten. the stress and deformation of the frame joints and poles were calculated using structure mechanics method. the character of the screw pole were analyzed

    同時，為提高設備整體的性能，對機械傳動單元中重要部件臺面框架與絲杠的機械性能進行了優化與計算，重點運用結構力學的分析方法對臺面框架各節點與桿件的受力與變形做了精確的計算，並對絲杠的耐磨性、剛度、穩定性進行了可靠性分析，保證了設備的總體精度，提高了設備的可靠性，得到了比較理想的結果。
  18. The numerical simulations of loading processes of flier - plates show that the loading history of the flier - plate designed with wave impedance as design parameter is significantly different from that of the flier - plate designed with density as design parameter and the former is expected to have better quasi - isentropic characteristic, which indicates that it is very essential to use wave impedance as design parameter directly to design the wave impedance distribution of flier - plate

    而以波阻抗作為設計參數，所得飛片的擊靶波形隨時間的變化更加平緩，有望獲得更好的準等熵壓縮性能。因此，直接採用波阻抗作設計參數，實現梯度飛片波阻抗分佈的精確設計是非常必要的。
  19. The used value of doppler centroid influence the imaging result very much, so it must be estimated precisely. the estimating methods contain time domain method and frequency domain method. time - frequency analysis method can be used to improve estimating precision

    多普勒中心頻率的取值對成像效果有很大影響，必須精確估計，估計方法有時域方法及頻域方法，還可利用時頻分析方法提高估計精度是。
  20. Method for more precise timing results

    方法獲得更精確的計時結果。
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