精度系數 的英文怎麼說

中文拼音 [jīngdùxìshǔ]
精度系數 英文
modulus of precision
  • 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）...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 精度 : precision; accuracy; degree of accuracy; precision accuracy; trueness
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. Abstract : the more precise equation of r - k was used to calculate the real gases. based on the generolized measurement of fugacity, the equation of substance ' s fugacity coefficient of mixed gqses was derived, and the results of the application was discussed

    文摘:對實際氣體選擇較精確的r - k方程，根據逸度計算的普遍化公式，導出了混合氣中物質逸度系數表達式，並對其應用結果進行了討論
  2. In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy

    本文研究了高階精度加權基本無振蕩（ weno ）格式及其在雙曲守恆律方程中的應用，在此基礎上作了兩個方面的工作：一是針對高頻聲波問題構造出一種基於保色散關系（ drp ）的weno有限差分格式，並對計算氣動聲學（ caa ）問題的代表性算例進行了大量數值實驗，比較了該格式捕捉波數的能力；另外，針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題，研究了利用界面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法，並且給出有代表性的密度滑移面問題的算例，得到一致高階精度的數值模擬結果。
  3. A data acquisition system with the following features is realized : ? transmission rate up to 100kbyte / s over usb ; ? system ' s dynamic range as high as 120 db ; ? multi - kind of trigger mode control ; ? sampling rate as high as 100 ksps ; ? 12 - bit a / d conversion accuracy ; ? 32k bytes on - board data memory ; ? the system, which was made up of large - scale electronic chips, is small, light and portable, and suitable for field use

    本設計最終實現了一個瞬態信號數據採集系統，它具有以下特點： ?採用usb介面進行高速數據傳輸，傳輸速度達100kbyte / s ； ?採用浮點a / d轉換技術，動態范圍達120db ； ?多種采樣觸發控制方式； ?最高采樣率100ksps ； ? 12位采樣精度： ? 32kb數據緩存； ?使用新型大規模電子器件，系統結構緊湊，重量輕，適合野外作業。
  4. According to eigenvalue equation ( general formula ) of the energy method of the plane steel frame structure stability, and considering the restriction of the end of the column of the main steel frame and function of deflection curve gained from the differential balance equation general resolution, we get the equation for calculating the length coefficient of the main frame structure stability of the steel arch gate and the resolutions are also given

    根據平面剛架穩定性能量法特徵值方程（通式） ，考慮弧形鋼閘門主框架柱的柱端約束的特殊情況，求出撓曲線函數（試解函數）通解，得到弧形鋼閘門主框架柱穩定性計算長度系數方程。其中弧門主框架主橫梁式形框架的臨界荷載比較現行規范推薦的有限元法簡單方便、結果精確及物理概念明確等優點。
  5. In order to improve test precision, techniques such as auto - gain control, proper sampling rate select and dithering should be applied into the data acquisition process, and data pre - processing techniques should be used to eliminate data with careless error and correct data with system error

    為了提高測試精度，在數據採集中，可以採用量程自動切換、合理的采樣頻率以及加擾技術；對採集的數據，需要進行預處理，主要包括剔除含有粗大誤差的數據和消除系統誤差等。
  6. Magnetron sputtering is common method for preparating metal film resistor. by this method, the target is very important for the performance of the resistor

    在金屬膜電阻器的生產過程中，靶材是非常關鍵的，它制約著金屬膜電阻器的精度、可靠性、電阻溫度系數等性能。
  7. Sb2016 high pressure high - power resistance box adopts especial aging treatment, precise wire wound resistor of low temperature coefficient and high - pressure airproof switch

    Sb2016型高壓大功率電阻箱採用經過特殊老化處理、低溫度系數的精密線繞電阻器及高壓密封開關。
  8. The results show that all the orders of the stress singularities at the interface edge can be determined precisely, and the related stress intenisity coefficients can also be determined by extrapolation method

    計算結果表明，本方法可以精確地求得振蕩應力奇異性次數，並且與奇異性對應的復應力強度系數也可以很方便地應用外插法得到。
  9. Motion control is a comprehensive subject. modern ac drive is a important embranchment in the field of motion control. however, it is difficult to rea1ize high - performance ac drive systems because induction motors are a kind of strongly - coupled nonlinear system with many variables and the torque is not easy to control. with vector control technology decoupling and torque control of ac motor are solved. the basic idea of vector control is that three - phase system is equiva1ent to two - phase system by coordinate transformation and it realizes the decoupling between field current and torque current of the stator in order to control the flux and current respectively, thus induction motor can be considered dc motor and high performance is achieved easily. with the progress of electric and electronic technology and the development of computer, high - integrated special modules and high - precision digital signal processor ( dsp ) are applied to ac drive so that vector control has been developed rapidly

    但是高性能的交流調速系統實現很困難，這是因為交流電機是多變量、強耦合的非線性系統，不易實現高性能轉矩控制。矢量控制技術則解決了交流電機解耦與轉矩控制問題，其基本思路? ?應用坐標變換將三相等效為二相，實現定子勵磁電流分量與轉矩電流分量之間的解耦，達到對交流電機磁鏈與電流分別控制的目的，交流電機等效為直流電機實現高性能調速。隨著電力電子技術的進步，計算機技術飛躍發展，高度集成的專用模塊和高精度的數字信號處理器應用於交流傳動系統中，促進矢量控制迅猛發展，日趨成熟。
  10. Test method for temperature - resistance coefficient of precision resistance alloys

    精密電阻合金電阻溫度系數測試方法
  11. Method of test for temperature coefficient of resistance of alloy wire for precision resistors

    精密電阻器合金絲電阻溫度系數試驗方法
  12. But often what is not obvious when reading a manufacturer ' s data sheet is how the initial accuracy of the device is affected by other key device parameters such as line regulation, load regulation, initial voltage error, output voltage temperature coefficient ( tc ), output voltage noise, turn - on settling time, thermal hyste - resis, quiescent supply current, and long - term stability

    但，人們閱讀廠家的數據手冊時，因受諸如（電源電壓）線性調整率、負載調整率、初始電壓誤差、輸出電壓溫度系數tc 、熱遲滯（系數） 、靜態電流和長期穩定度等參數的影響而使初始精度往往不明顯。
  13. For frames of more than 3 stories, the weakest story is first selected and a three - story sub - assemblage including the weakest column is taken out, and the proposed method is applied, the effective length of the weakest column is thus obtained, the effective length of the remaining columns are computed through a pre - defined relations. because the sub - assemblage included beams at far ends of the columns above and below the column under consideration, the far end condition ( hinged or fixed ) may be considered easily

    對于更多層的情況，先判斷薄弱層，再假定薄弱層的上下層柱遠端的梁端約束全部提供給與薄弱層相鄰層的柱，取出薄弱層及其上下層的樑柱，按前面處理兩層或三層框架的方法可以得到薄弱層柱很精確的計算長度系數，相應導得其它層柱的計算長度系數。
  14. Cls21 - i metallized polypropylene capacitors have low dissipation factor, stable capacitance, puny thermoguotiety. they can steadily work on logic control circuits & integral circuits and phase etc of instruments

    型金屬化聚碳酸酯電容器損耗小，電容量穩定，溫度系數小，能穩定地工作在精密儀器、儀表的邏輯控制電路，積分電路等場合。
  15. Cls21 - ii metallized polypropylene capacitors have low dissipation factor, stable capacitance, puny thermoguotiety. they can steadily work on logic control circuits & integral circuits and phase etc of instruments

    Ii型金屬化聚碳酸酯電容器損耗小，電容量穩定，溫度系數小，能穩定地工作在精密儀器、儀表的邏輯控制電路，積分電路等場合。
  16. At present the manufacture of surface acoustic wave use the technology of the final submicron. a series of the devices of low insertion loss, high q saw rayleigh surface acoustic wave resonators or stws that insertion loss has less than 5db, load quality factor ( ql ) is more than 1000 on the quartz piezoelectric with zero of first temperature factor in the research. these difference frequencies are 60mhz, 280mhz, 739mhz and 1ghz of normal frequency and at also surface acoustic wave. using 1. 25db noise factor amplifier, careful design curcuit, good setting printed curcuit board, and using the 1ghz surface transverse wave resonator as frequency element, researching the low phase noise surface acoustic wave with sideband phase noise near ? 120dbc / hz deviating 1khz on carrier, spurious suppress with 80db

    本研究採用一階溫度系數為零的壓電石英基片上製作出損耗小於5db 、有載品值因素（ ql值）超過1000的一系列低損耗、高q值聲表面波rayleigh波或stw諧振器，頻率分別為60mhz 、 280mhz 、 739mhz和1ghz等不同頻率的高性能聲表面波諧振器。並採用噪聲系數為1 . 25db的低噪聲系數放大器，精心設計電路，優化設計布置印製電路板，用標稱頻率為1ghz的聲表面波諧振器為頻率控制元件，製作出在偏離載頻1khz處的單邊帶相位噪聲近- 120dbc / hz 、雜波抑制達80db以上的低相位噪聲聲表面波振蕩器。
  17. 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。
  18. The ansys finite element program is used to analysis the over - all stability of portal frames, with considering axial force, moment, and geometrical nonlinear effect. the the accurate effective length factors of gable portal frames are got

    用ansys程序對山形門式剛架進行了整體穩定分析，通過考慮軸力、彎矩、和結構的幾何非線性效應，得到了山形門式剛架精確的計算長度系數。
  19. 2. we analysize detailly the influence of the systematical parameter to the height precision in the ct - insar. we through the simulation of computer establish the mathematical model of the different deviation source with the height precision and the relation curvature, morever we have given the relation of the height precision with the ground distance in the measurement strap under the given deviation precision

    詳細分析了ct - insar中各系統參數對高度精度的影響，建立了不同誤差源與高度精度的數學模型並通過計算機模擬給出了相應的誤差關系曲線，同時在設定各誤差精度的條件下，給出了測繪帶內高度精度與地距之間的關系。
  20. In this paper, we describe the research and realization of the high - speed data acquisition system applied in initial velocity radar. the sampling rate can reach 40msps, and the resolution is 12 bits. the acquisition speed that the system provides can be altered

    本文介紹了基於初速雷達的高速數據採集系統的研製和實現方法，該系統提供了最高40mhz的采樣速率、 12位采樣精度的數據採集通道，且采樣頻率可調。
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