弧的容量 的英文怎麼說

中文拼音 [húderóngliáng]
弧的容量 英文
capacity of arc
  • 弧 : 名詞1. [數學] （圓周的任意一段） arc2. （古代指弓） bow
  • 的 : 4次方是 The fourth power of 2 is direction
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  1. Fluid noise mainly comes from out put pulsation of rate of flow, the main reason of out put pulsation of rate of flow is the instant high pressure return flow that obturation cubage produced when the big round curve pressure transition. the v trough on the port plate can reduce the fluid noise. in this paper, the author based on the acting of dam a river and condensability of liquid and used matlab language as tool to calculate the v trough on the original port plate and drew out the p - t diagrammatic curve and analyzed its shortcoming and improved the design of original v trough and got that the best size of its angle was 12. 3 and its length was 5mm and the cross section was an equilateral triangle

    流體噪聲主要來源於輸出流量脈動，造成輸出流量脈動的主要原因是閉死容積在大圓弧段壓力切換時產生的瞬時高壓迴流，在配流盤上開設v型尖槽可降低因高壓迴流而引起的流體噪聲，本文以截流作用和液體的可壓縮性為理論依據，以matlab語言為工具，對原配流盤上的v型尖槽進行了理論計算，繪制出p - t圖線，分析了它的不足，並對原有v型尖槽進行了優化設計，得出了v型尖槽的最佳幾何尺寸：配流盤平面上的v型尖槽的兩邊的夾角為12 . 3 ，槽長5mm ，槽的橫截面為等邊三角形。
  2. According to the quickly adjustable characteristic of the peterson coil grounding system, this dissertation proposes a new control strategy. when the system is in operation, the strategy can limit the series resonance over - voltage by using the off - resonance method. when fault occurs, the strategy can conveniently suppressing arc by rapidly adjusting the inductance value of the peterson coil to the point, which the resonance with grounding capacitance of the power network is occurred

    依據可控硅控制消弧線圈接地系統的快速可控性，一改傳統的電網正常運行時調節消弧線圈接近於全補償的預調諧方法，提出正常運行時採用脫諧方法抑制串聯諧振過電壓；故障時立即調節消弧線圈電感量達到與對地電容諧振，以利熄弧的新型調節原理和方法。
  3. Abstract : a new waveguide which can change the wide wall of a rectangular waveguide into a symmetric arc wall is named as a cam - rectangular waveguide. comparing to sectoral waveguide, the new waveguide has the same voltage characteristics and is easier to be produced and fixed. an approximate formula of the dominant mode fields and the normalized conductance of a longitudinal resonant slot cut in the curved wall of a cam - rectangular waveguide are given. a resonant slot linear array in c & x band is designed, in which the slot voltage distribution is equiphase and the input is matched. the input voltage stationary ware ratio and the h - plane pattern of the antenna are measured. the experimental results show the conformance with theoretical results

    文摘:把常用的矩形波導一個寬面改成圓弧形構成的波導稱為圓突-矩形波導.這種波導與扇面波導相比：電性能相當；波導管結構更加簡單，容易加工，便於安裝.文中給出圓突-矩形波導中主模場，圓曲面上縱向槽歸一化諧振電導近似公式.設計了c和x波段波導曲面縱向諧振縫隙線陣，縫隙電壓相位為同相分佈，輸入端匹配.實際測量了天線輸入端電壓駐波比和h面方向圖，理論與實驗相吻合
  4. The problem about neutral - point - grounding mode is an all - around technical problem which associated with not only power system reliability ， insulation coordination ， electromagnetic interference ， but assault safety 。 in china ， the neutral grounding modes of the 10kv net involved of none grounding, grounding by arc suppressing coils, resistance grounding or reactance grounding in the past 。 with the development of civic power network ， low resistance grounding mode was used to restrain the over voltage, particularly in guangzhou, shanghai ， beijing ， and zhuhai etc. it was reported that the over - voltage level of low resistance grounding mode is lower than that of arc suppressing coil mode, but the operation carried out the other way 。 at substations in guangzhou and shanghai it was found that the low resistance grounding mode is successful 。 but in some areas ， such as zhuhai ， substations grounding with low resistance revealed some problems ， including power supply reliability rapidly dropping ， transmitting line often tripping ； and person safety being threatened 。 so interiorly the grounding mode selection of the 10kv network was disputed, which mainly focused on the fault form of 10kv net grounding, the apply area of suppressing arcing coil grounding mode, power supply reliability level of the two modes, person safety, communication interfere and the workload of maintenance

    爭議點主要是在10kv電網接地故障的形式、消弧線圈接地的應用范圍、兩種運行方式供電可靠性的高低、人身安全、通訊干擾和運行維護工作量等諸多方面。 11 17本論文就是針對以電纜為主的城區10kv電網中性點接地方式的選擇問題進行研究。論文首先對10kv電網的中性點運行各種方式進行分析，比較各方式的特點，然後以重慶儲奇門變電站10kv電網的實際參數來建立數值計算模型，在考慮了電網接地電容電流變化、中性點電阻取值大小、接地點接地電阻值變化等多種影響因素的情況下，對中性點經消弧線圈接地和經小電阻接地方式下電網的過電壓水平和接地點短路電流大小進行了數值計算，其計算結果與電科院所作現場試驗進行了比較。
  5. And we design an intelligence switch that is to be used to protect power system. the switch ' s strong advantage is that cutting - current is small, so time is very short when power system, which happened short circuit is switched off

    該智能開關的優點是斷開電路時電流小，不易拉弧，因而開斷時間短，斷路器使用壽命也長，而且有望減小斷路器的容量，節省投資。
  6. Stiff arc, with heat concentrated, easy to fill welding wire, so especially suitable for wire filling welding in bicycle area

    電弧挺度好，熱量集中，填絲容易，特別適宜自行車等行業的填絲焊接。
  7. By improving surface condition of parts and one shot seal - off clean room grade, using ultrasonic vapor phase cleaning process, the inner parts of vacuum interrupter get cleaner. movable particles have been diminished by automatic current ageing, power frequency hi - voltage ageing and dynamic high current ageing. as the dielectric strength of clearance in vacuum interrupter improved, the probability of re - ignition in test drops evidently

    通過提高零件表面加工質量，改善一次封排間的真空衛生條件、制定合理的超聲波氣相清洗工藝提高管內潔凈度，採用自動電流老煉、超高壓工頻老煉、大電流動態老煉等工藝進一步消除真空滅弧室內活動性微粒，可提高真空滅弧室真空間隙介質強度，使真空開關投切電容器組的重燃率大大降低，並通過實驗驗證真空開關投切電容器組的重燃率在製造工藝改進後由原來的10 . 7 %降低至1 . 3 % 。
  8. So the development of self - energy sf6 cb is very important. in the paper, the math model of arc - quenching chamber air - pressure character is built on the base of 126kv / 31. 5ka self - energy sf6 cb ' s exploiting, then the theory analysis and calculation is deeply been done for cylinder radius, nozzle spout radius and opening position of moved contact that they have the essential effect for the use of arc energy in the course of opening. arc - quenching chamber parameter is confirmed according to the request of full opening and fault opening when the cb is opening

    本文針對126kv31 . 5ka自能式sf _ 6斷路器的研製，建立了相應的滅弧室氣壓特性數學模型，對自能式sf _ 6斷路器開斷過程中電弧能量利用有重要影響的滅弧室缸徑、噴口直徑、動觸桿開口位置進行了詳細深入的理論分析和計算，並根據斷路器開斷中的滿容量開斷和近區故障開斷的要求確定了滅弧室參數。
  9. First, suppose a source point and a sink point. second, draw a unilateral line from source point to every substation node. the line ' s capacity is set as corresponding substation ' s allowable load value and the line cost is set as the substation ' s unit load cost

    本文通過線性化處理后將網架優化模型描述為一個最小費用最大流問題，虛擬一個源點和一個匯點，從源點到各變電站節點各引一條單向弧，弧容量為變電站允許的負荷值，弧費用為變電站單位負荷的費用。
  10. The shift capacity also has been improved continually and the shift ways are more perfect with days. my subject study is the vaccum tap switch of the load voltage regulation with the dry transformer, which has features of safety, reliability and convenience for maintain

    開關的切換容量不斷提高。滅弧方式更加完善。本課題研究的是配合乾式變壓器有載調壓的真空分接開關。
  11. Firstly, the paper introduces the development and application of computer graphics & image technique, discusses the principle and method of cg and digital image processing, such as matrix of the graphic transformation, homogeneous reference frame, sampling and quantization of the image, file format of the image, template operation, etc. secondly the paper introduces the purpose and method of image enhancement processing, explains the each occasion of those methods such as threshold transformation, smoothing processing, sharpening processing, analyzes and contrasts the processing results of object image. thirdly, the paper introduces the method of mathematics morphologic, edge detection and thinning processing, attains character description of image and character dots of the contour. fourthly, the paper processes the coordinate transformation to character dots and basic splines fitting, imports correlative condition to devise meshing line and meshing track

    本文首先介紹了計算機圖形圖像技術的發展與應用情況，對計算機圖形學和數字圖像處理的一些基本理論和方法如圖形變換矩陣、齊次坐標系、圖像采樣和量化、圖像文件格式、模板操作等內容進行了討論：然後對圖像增強處理的目的和方法進行了介紹，對諸如閥值變換、平滑處理、銳化處理等方法的應用場合進行了說明，並對實物圖像的處理結果進行了分析與比較；接下來介紹了數學形態學方法、對增強后的圖像進行邊緣檢測的方法和圖像的特徵描述方法，並獲取輪廓的特徵點：隨后對獲取的特徵點進行坐標變換，並進行b樣條曲線擬合，引入相關條件生成齒輪副的嚙合線及嚙合軌跡：最後引入等值線和區域填充表示方法，並以等值線和區域填充的形式對弧齒錐齒輪嚙合模擬的載荷分佈情況進行了直觀的表示。
  12. In this paper, the research was made to solute these problems. the peterson coil compensation system has been designed which can measure capacitor current and damp degree ; a fault selection method of distribution network which was put forward that based on ftu

    本課題就這兩方面的問題進行了深入研究，設計了一種消弧線圈自動補償裝置，該裝置可測量系統對地電容電流和阻尼率，具有響應快、準確性高的優點;同時提出了一種基於ftu的配電網接地選線方法。
  13. The necessity and purpose of the technological revamp is discussed in this paper. the subjects of the revamp are briefly introduced herein, which involve : 1 ) enlarging the desulphurization ability of hot metal to achieve complete desulphurization pretreatment of hot metal ; 2 ) drawing up a general plan and programme for the revamp of the continuous caster and implementing it step by step ; 3 ) building up a straight curved slab continuous casting machine at the begining to meet the requirements for high quality steel

    分析了技術改造的必要性;闡明了技術改造的目的;簡介了技術改造的主要內容，擴大鐵水脫硫能力，實現鐵水全部脫硫預處理，鑄機改造總體規劃設計、分步實施，先改建成一座直弧式板坯鑄機，以適應高質量鋼的要求。
  14. Because of the nonlinear, time - variability and uncertainty of the submerged - arc welding progress, the characteristic of accurate mathematic model being hard to establish, we can adopt the fuzzy control technology to design the welding dolly control system, and the couple closed - loop fuzzy control velocity system and fuzzy control algorithm for the speed of the welding dolly are researched based on the control system of submerged ? arc welding

    同時長時間工作也容易使人產生疲勞，影響焊接質量。針對埋弧焊過程的非線性、時變性和不確定性，難以建立精確的數學模型等特點，採用模糊控制來設計焊接小車控制系統，同時研究了焊接小車雙閉環模糊調速系統，並針對焊接小車速度的雙閉環模糊控制演算法進行討論。
  15. Abstract : theoretical distortion of the differential capacitor transducer with arch electrodes is analyzed in quantity while measuring the error motion of spindle

    文摘:定量地分析了圓弧極板型差動電容式傳感器在測量主軸回轉誤差運動時的原理誤差。
  16. The paper explains the method of the petersen coil parameter selection and expatiates the working principle of micro - computer controller. new methods of on - line measuring of the capacitive current and the control of the series resistance are put forward ? which lead to the integration of the automatic resonance and the faulted line selection in a compensating network

    文中說明了消弧線圈參數的選擇方法，闡述了微機控制器的工作原理，提出了在線測量補償電網對地電容電流以及控制串聯電阻的新方法，實現了補償電網自動調諧與單相接地選線的一體化。
  17. In addition, the enormous use of cables in city power system increases the current through the grounded capacitor. these make the single - phase fault current get greater, which lead to more and more instantaneous grounding faults unable to eliminate naturally

    近年來，由於城市配電網路規模的不斷發展，以及城網中大量使用電纜，使得系統的接地電容電流大大增加，系統單相接地故障時接地電弧不能自動熄滅，越來越多的瞬間單相接地故障不能自動消除。
  18. In recent years, with the large - scale reconstruction of city power system, the scale of power system is continuously expanding, and the power supply network is becoming larger and larger. in addition, the enormous use of cables in city power system increases the current through the grounded capacitor. these lead to more and more instantaneously grounding faults unable to eliminate naturally

    近年來，國家對城市電網的大規模改造，使得電網的規模不斷發展，配電網路越來越大，加上城網中大量使用電纜，使接地電容電流大大增加，越來越多的瞬間單相接地故障不能自動消除，為了解決這一問題，我國普遍採用中性點經消弧線圈接地的補償方式。
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