vacuum characteristic 中文意思是什麼

vacuum characteristic 解釋
真空特性
  • vacuum : n （pl vacuums vac ua ）1 真空；空處，空虛，空白。2 〈美口〉吸塵器（＝ vacuum cleaner）。vi vt 〈...
  • characteristic : adj 有特性的；表示…特性的，…特有的。 Japan s characteristic art 日本特有的藝術。n 特性，特徵，性...
  1. The age hardening characteristic of as - cast cu20ni20mn and cu20ni35mn alloys and the interface characteristic between the alloy and cast tungsten carbide were studied, and on the basis of this study, composites of cu - ni - mn alloy reinforced with different volume fraction ( 0 - 45vol. % ) and different size ( 42 - 362 m ) of cast tungsten carbide particles were made by vacuum hot - pressing liquid sintering technology. pin on disk two body abrasion tests have been performed with different size of sic abrasive under different loads

    本文研究了鑄態cu20ni20mn和cu20ni35mn合金的時效硬化特性及其與鑄造碳化鎢的界面特性，並在此基礎上以不同尺寸（ 42 362 m ）的鑄造碳化鎢顆粒為增強體，採用真空熱壓液相燒結技術制備了不同顆粒含量（ 0 45vol . ）的鑄造碳化鎢顆粒增強cu - ni - mn合金基復合材料；以不同粒度的sic為磨料，在不同載荷條件下利用銷?盤磨損試驗機測試了復合材料的二體磨料磨損性能。
  2. The zircondri filin wtut rirconia wa prepared and the removing technology of the zirconia on the zirconium sdrices was obtalned. the methods of chemistry and magnetron sputtring plating were used in order to platc a palladium film, which is characteristic of self catalysis for hydrogen and the sole h - permselectivity on the clean rirconium sdrices prepared by the methods of electrochemitw and ( or ) high temperatur vacuum hydrgenization, which was firstly studied. the plating tedrilogy was obained and the surface modified zirconium membran was prepared

    在利用電化學法和真空高溫除氧加氫法去除了鋯表面氧化膜的基礎上，分別採用化學法、磁控濺射法兩種鍍膜技術在其表面上鍍上了一層對氫具有自催化分解、唯一選擇滲透性的金屬鈀膜，首次獲得了鋯基材膜表面上鍍鈀的制備工藝，成功制備了鋯表面改性選擇滲氫膜。
  3. Research on vacuum system characteristic of vacuum freeze dryer

    真空冷凍乾燥機真空系統特性的研究
  4. The finite element model is built for the axial magnetic field of the cup vacuum interrupter contacts without iron core and with two kinds of iron core. the calculation and analysis of the three - dimension axial magnetic field distribution characteristic on the axial magnetic field of cup the vacuum interrupter with iron core are carried out for the first time

    對無鐵芯及兩種鐵芯結構的杯狀縱磁真空滅弧室觸頭建立了有限元模型，首次對有鐵芯的杯狀縱磁真空滅弧室進行了三維縱向磁場分佈特性的計算與分析。
  5. Since solder balls do oxidize quickly and builds an oxide coat that reduces the soldering characteristic of the ball, the chips should be vacuum sealed shortly after the reball process

    因為很容易氧化並且形成一個氧化層覆蓋會降低錫球的焊接特性，所以在重新植球加工后應盡快真空封裝。
  6. The factors which influenced the process include the insulator ' s material, structure, the distribution of space electrical field, the way to deal with the surface, the characteristic of voltage waveform, pulse width etc. there are two kinds of theory for the vacuum surface flashover : secondary electron emission avalanche ( seea ) and electron triggered polarization relaxation ( etpr )

    影響該過程的因素包括絕緣材料結構、空間電場分佈、表面處理方法、所加電壓特徵，脈沖寬度等。研究真空表面閃絡過程有兩類理論：二次電子發射崩潰（ seea ）和電子引發極化鬆弛（ etpr ） 。
  7. Sum up the characteristic of all kinds of the solar energy collector through the way in which the solar energy collector classifies ; analyse the principle and characteristic of the vacuum hot - tube collector of solar energy ; study the method of calculating the instantaneous efficiency of the vacuum hot - tube collector of solar energy, then prove the method through the experiment means

    通過對太陽能集熱器分類的方式對各類太陽能集熱器的特點作了歸納，並得出在遼河油田進行太陽能熱利用就必須採用熱管式真空管太陽能集熱器的結論;分析熱管式真空管太陽能集熱器的原理和特點;研究熱管式真空管太陽能的瞬時效率計算方法，然後進行了實驗驗證。
  8. The insulation characteristic of insulator in vacuum is researched in the process of the high voltage breakdown along the insulator surface in vacuum, which is called vacuum surface flashover

    絕緣子的真空表面絕緣特性研究真空下的高壓沿絕緣子表面擊穿物理過程，稱真空表面閃絡過程。
  9. To improve the transmitting characteristic and decrease the output work has a direct effect on the enhancement of the operating property and life - span of the operating mechanism of vacuum circuit breakes. based on the characteristics of polynomial rule of the cam movement, considering the pressure angle of cam device, an optimization model is established, with the coefficients of polynomial rule of cam movement as the optimizing variable, and the minimum output work of the mechanism as the object function. with the optimization tool box of matlab, the optimization process is conveniently completed and the perfect result of optimization design is obtained

    改善真空斷路器操動機構的傳動運動特性，減小真空斷路器的操作輸出功，對提高真空斷路器的操作使用性能及壽命都具有直接的影響.利用凸輪機構的多項式運動規律的特點，以凸輪多項式運動規律的多項式系數為優化變量，以斷路器操動機構最小的輸出功為目標函數，考慮操動機構合分閘時凸輪機構傳動壓力角的情況，建立了彈簧操動機構中凸輪機構的優化數學模型，並利用matlab語言的優化工具箱方便地實現了優化過程，得到了較理想的優化設計結果
  10. This paper designs the characteristic curves and system curves for the dredging materials of the water and all kind of mixtures, which base on the theory of hydraulic dredging and the experiment data of prototype dredger, then puts out the equations of computing the work point of dredge pump system and the model that can simulate the work condition of dredging pump such as the flow rate, vacuum and pressures

    該模型根據水力疏浚原理和1750挖泥船的技術數據，設計了泥泵和管路的清水特性曲線與泥漿特性曲線，在此基礎上給出了泥泵工作點的計算方法。最後給出了計算泥泵工況的模型和模擬實例； 3 、絞刀電動機拖動系統。
  11. The vacuum killing arc room has been the mainstream and future developing aspect in middle - voltage switch field because it has fully utilized the excellent characteristic of the insulation and killing arc of the vacuum

    真空滅弧室由於充分利用了真空優異的絕緣與熄弧特性，在中壓開關領域中已成為當前的主流及未來發展的方向。
  12. Chapter one of the thesis introduces the vacuum structure, operation principle and electric arc characteristic of the vacuum killing arc room concisely, and retrospected the development of the vacuum killing arc room briefly, and indicated the research purpose and meaning of thesis at the same time. chapter two introduces the design process and manufacturing technology of the vacuum killing arc room possessing cup form horizontal magnetism touch head structure. electric magnetic field finite element, an analytical soft of ansoft company, and msc non - linear finite element, an analytical soft of marc of company, have been adopted to analyze the distribution state of the horizontal magnetic field between the touch heads, electric field intensity distribute state and temperature rise situation which the touch head produced

    論文的第一章首先是對真空滅弧室的結構、工作原理和電弧特性進行了簡明的闡述，同時對真空滅弧室的發展做了一個簡要的回顧，並表明了本論文的研究目的和意義;第二章介紹了杯狀橫磁真空滅弧室的設計過程和製造工藝;採用ansoft公司電磁場有限元分析軟體和msc公司marc非線性有限元分析軟體分析了觸頭結構產生的橫向磁場在觸頭間的分佈狀況、電場強度分佈狀況以及溫升情況。
  13. On the theory of vacuum measurement, with the structure of a vacuum interrupter and the specific characteristic of using a vacuum breaker, vacuum degree on - line measurement in a vacuum interrupter applying the theory of penning discharge is advanced in this article

    本文從真空測量的基礎理論出發，結合真空滅弧室結構和真空開關使用的特殊性，提出了應用潘寧放電原理在線測量真空滅弧室真空度。
  14. Choose the good vacuum characteristic insulator, reduce the probable weakness ; 2. reduce the electrical field in the triple junction as possible 3. make the electrical field distributing along the surface more uniform

    總結提出了絕緣子設計的三點基本考慮： 1 、選擇真空性能好的絕緣子，減少可能存在的弱點； 2 、盡量降低三結合點電場強度； 3 、使電場沿絕緣子表面分佈盡量均勻。
  15. Finally, this paper detailedly introduces the application of preloading method combining with vacuum stack - load in the practice of a freeway project. three sorts of experience calculation method of final settlement which based on the settlement data measured in - site are contrastively analysed, and points out the hyperbola method be recommended for settlement predicted because it accord with the actual instance of guangdong pearl river delta area, and bring up the range of settlement correcting coefficient corresponds to the characteristic of the region

    最後，本文結合某高速公路工程實踐，詳細介紹了真空聯合堆載法在高速公路上的應用，並利用實測沉降曲線對三種預估最終沉降量的經驗方法進行了對比分析，提出了雙曲線法計算最終沉降量較符合廣東珠三角地區，並提出較符合地區特點的沉降修正系數取值范圍，可供類似工程參考。
  16. In this paper, the over voltage induced by re - ignition, rules of breakdown in vacuum contact clearance, factors which influence dielectric strength of clearance and characteristics of re - ignition when vacuum switchgear switch capacitor banks are analyzed. the conclusion is that the breakdown of clearance in vacuum interrupter is the direct cause which inducing re - ignition of vacuum circuit - breaker in capacitor banks ’ switch. particle breakdown is the essential reason to induce breakdown in clearance of vacuum interrupter, although mechanical characteristic of vacuum circuit - breaker is another factor

    本文通過對真空開關投切電容器組重燃過電壓、真空觸頭間隙擊穿機理及影響真空間隙介質強度的因素、真空開關投切電容器組重燃現象特點進行分析研究發現，真空滅弧室斷口的真空間隙擊穿是導致真空斷路器投切電容器組重燃的直接原因，其次是真空斷路器機械性能的影響，而微粒擊穿是導致國產真空滅弧室真空間隙擊穿的根本原因。
  17. According to the characteristic of high vacuum thermal environment in low orbit, it builds the theoretical modeling of the thermal analysis of thermal distortion in optical reflector of antennas system. making use of the results reached by ansys software, it analyzes and compare the stress and distortion of reflector under the static temperature

    論文建立了在軌運行空間高真空熱環境下的天線鏡面熱變形分析模型，利用有限元分析軟體ansys模擬得到的結果，分析比較了穩態溫度場條件下潛望式天線系統反射鏡面的應力及變形情況。
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