電弧區 的英文怎麼說

中文拼音 [diànhúqū]
電弧區 英文
arc zone
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 弧 : 名詞1. [數學] （圓周的任意一段） arc2. （古代指弓） bow
  • 區 : 區名詞（姓氏） a surname
  1. Properties of the cathode fall region of an electric arc

    電弧陰極區性質的研究
  2. Backing weld procedure technique of all - position narrow gap and thick - walled pipe welding is developed about all - position single - pass welding section analysis, wire feeding behavior, weld arc length, welding current analysis, procedure and joint test. the achievement has general guide meaning to producing and testing all - position welder

    從單焊道全位置區段、送絲行為、焊接弧長（電壓） 、電流行為分析、工藝試驗和接頭檢驗等幾方面介紹管道全位置打底焊工藝特點，其研究成果對全位置焊接機的製造和調試具有普遍指導意義。
  3. Abstract : backing weld procedure technique of all - position narrow gap and thick - walled pipe welding is developed about all - position single - pass welding section analysis, wire feeding behavior, weld arc length, welding current analysis, procedure and joint test. the achievement has general guide meaning to producing and testing all - position welder

    文摘:從單焊道全位置區段、送絲行為、焊接弧長（電壓） 、電流行為分析、工藝試驗和接頭檢驗等幾方面介紹管道全位置打底焊工藝特點，其研究成果對全位置焊接機的製造和調試具有普遍指導意義。
  4. On account of the solidification character of rare earth alloys, the zone melting is improved by putting the alloys prepared by arc - melting into the quartz tube, then melting

    鑒于稀土化合物凝固結晶的特點，對區熔法進行了改進，將電弧爐熔煉好的樣品裝入石英管中，封石英管后在區熔設備上進行區熔。
  5. Electrical field stress at the icicle tips is even stronger. at these areas, if the electric field across air gaps is high enough, corona discharges are initiated. this can lead to the development of local arcs across the air gaps causing a substantial increase in leakage current and a concomitant melting of ice

    空氣間隙的存在使覆冰絕緣子表面的電場分佈發生了明顯畸變，間隙上承受了非常高的電壓，這使得冰凌尖端的電場變得相當強，一旦電場達到了電暈的起始電場，局部放電就在這一區域發生，進而產生局部電弧並逐漸發展成整串的閃絡，泄漏電流迅速增大，同時伴隨著冰的融化。
  6. In order to solve the default of the limited valid scope and discontinuity characteristic, introducing the state continuous conversion gene based on establishment of respective mathematics model for low and magnitude current scope, and integrate with them reasonably then having established the mathematics model of suitable whole scope and having solved present mathematics model existent problems

    本文針對目前電弧爐負載數學模型存在的適用范圍有限、特性不連續等缺點，在建立了分別適合大、小電流區域運行特性的數學模型的基礎上，引入狀態連續轉換因子，將分別適合大、小電流區域運行特性的數學模型有機結合為一個整體，建立了適合全范圍的數學模型，解決了目前數學模型存在的問題。
  7. 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。
  8. The key process of the algorithm, called nodes transforming to arcs, is based on the calculation loads of coupling nodes and arcs loads from the loads of switch nodes. getting the area of coupling nodes is the most important process in nodes transforming to arcs. this paper presents a new method ， which uses the adjacency matrix of distribution network and the information matrix of

    變結構耗散網路是一種新的配電網自動化演算法，由配電網開關頂點負荷求弧負荷和耦合頂點負荷的點弧變換是整個演算法中確定配電網饋線故障區域的基礎，而進行點弧變換的關鍵就在於分離耦合點區域。
  9. Combined with the practical situiation in distribution network, it ' s suitable to select graph algorithm as the theoretical algorithm base. based on structure variable dissipated network theory, this thesis detailedly discusses the transforms of base - to - shape, shape - to - base, vertex - to - arc, arc - to - vertex, over - heated arc dectection, load allotting, load balancing and optimum restoration

    本論文基於變結構耗散網路理論，詳細討論了基形變換、形基變換、點弧變換、弧點變換、過熱弧搜尋、負荷分配、負荷均衡化以及優化恢復非故障停電區域供電等一系列與饋線自動化功能相關的處理演算法。
  10. The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material

    本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。
  11. Computational results show that the axial gas flow and the rotary flow, especially the axial gas flow plays the main role on the arc stability. the rotary flow can larger the region of the arc stability

    研究結果表明，縱向氣流和旋轉氣流對電弧的穩定性確實起作用，尤其是縱向氣流，起著重要的作用，而旋轉氣流對電弧的穩定區域的增加效果顯著。
  12. Crustal electric structure of haiyuan arcuate tectonic region in the northeastern margin of qinghai - xizang plateau, china

    青藏高原東北緣海原弧形構造區地殼電性結構探測研究
  13. Abstract : the image of arc zone of flux - cored underwater wet welding was developed with underwater ccd camera system and composed filter technology. the discussion is mainly focused on the theory of edge detection. an image edge detection method based on median filter and grads algorithm was developed to detect the arc burning zone and arc bubble zone efficiently, which laid the foundation for further analysis of underwater wet welding arc mechanism and process control

    文摘:通過復合濾光技術和水下ccd攝像系統，採集出了藥芯焊絲水下濕法焊接電弧區域圖像，重點論述了邊緣檢測理論，確定了基於中值濾波和梯度運算元的電弧區域圖像邊緣檢測方法，有效地區分了電弧燃燒區域和電弧氣泡區域，從而為水下濕法焊接電弧的機理分析及水下焊接過程式控制制奠定了基礎。
  14. By the test of three - dimensional distribution, form character, rotating frequency and magnetic field intensity of rotating magnetic field, it showed that the magnetic field produced is a highly rotating magnetic field and mainly distribute on welding arc region, rotating frequency and magnetic intensity can be regulated through excitation power source

    通過對產生磁場的空間分佈，形態特徵，以及旋轉頻率和場強大小的測試證明該磁場是一個高速旋轉的磁場空間，而且磁場主要集中分佈在焊接電弧區域內，磁場的旋轉頻率和場強大小都可以通過勵磁電源進行良好調節。
  15. Magnetic head is designed by six magnetic poles in symmetrical distribution, the design of excitation loop and excitation angle makes magnetic field act on welding arc region which could control welding arc effectively. the insulation, cooling and hermetization of magnetic head avoid the influence on magnetic field of outside ; miniaturization design of magnetic head could achieve different welding process

    磁頭裝置採用六磁極對稱勵磁方式設計，勵磁線圈和勵磁角度的設計使產生的磁場恰好作用於焊接電弧區域以實現對電弧的有效控制;磁頭的絕緣，冷卻，密封設計避免了焊接過程中外界因素對磁場的干擾;磁頭整體的小型化使該裝置可以實現多種形式的焊接工藝。
  16. 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。
  17. Abstract : through the analysis of the coordination characteristics between the switch and the fuses in combination, it is shown that the transfer current of combination can be decreased by reducing the prearcing time of fuses in the range of transfer current or by increasing the fuse - initiated opening time ( t0 ) of the switch. the ways to decrease the transfer current for present combinations are put forward

    文摘:本文通過對組合電器中負荷開關與熔斷器之間的配合特性分析，認為減小熔斷器在轉移電流區域內的弧前時間或適當增加熔斷器觸發的負荷開關分閘時間t0 ，均可降低組合電器所需開斷的轉移電流值，並針對現有組合電器提出了減小轉移電流的具體方案。
  18. The cable is manufactured on argon arc welding, crrugating and slotting production lind with the most advanced technolongy byslotting the holes along outer conductor axis, so the evenly - distributed rdlatively strong radiating signal in the close vicinty lf the cable along ts axis make it possible signal transimission, across long distance in uncovered area

    50歐姆漏泄同軸電纜系採用現今最先進的氬弧焊、軋紋和可多向開槽設備，切削一組合適的外導體槽孔，使電纜周圍沿信號傳輸方向具有強度相對均勻的射頻信號，實現信號在分立天線盲區的長距離輸送。
  19. In this paper, an ingot of niobium - niobium silicide based in - situ composites ( rmics ) was prepared by arc melting process, and nb - nb3si / nb5si3 in - situ composites with a uniformly orientated microstructure were produced in a high temperature gradient directional solidification apparatus named electron beam floating zone melting ( ebfzm ). the relationships between the processing parameters and the characteristics of the solidified microstructure have been investigated. the influence of the microstructure on the mechanical properties has been revealed and the rupture mechanism at room temperature has been discussed

    本文採用真空電弧自耗熔煉法制備了鈮?硅基rmics材料的母合金錠，並採用電子束區熔（ ebfzm ）高溫度梯度定向凝固裝置制備了定向效果良好的nb - nb _ 3si nb _ 5si _ 3共晶自生復合材料，並對其定向凝固工藝參數和組織之間的對應規律、組織特性進行了研究，探討了凝固組織對室溫力學性能的影響及其斷裂機制。
  20. The results show that columnar center zone was observed in the tri - mixed gas arc shape

    結果表明，三元混合氣體的電弧形態中可觀察到柱狀中心區。
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