有向弧 的英文怎麼說

中文拼音 [yǒuxiànghú]
有向弧 英文
directed arc
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 弧 : 名詞1. [數學] （圓周的任意一段） arc2. （古代指弓） bow
  1. Chagan sag is a secondary tectonic unit in chagandelesu depression, northeastern yingen - eji ' naqi basin, and the basement of the basin is a paleozoic fold belt of continental margin or island arc at the connection region of north china plate * tarim plate and kazakstan plate, with the character of erogenic belt. in working area and its adjacent area, the forming tectonic setting of indosinian intrusion was that orogenic belt pressed strongly, intracontinental subduction ; that of early yanshan movement epoch was the stress field transferred from compression to extension meanwhile the incrassate crust of orogenic zone turned to extensional collapse ; and that of early cretaceous volcanics was that the area structure extensional collapse further more during the post period of orogenic phase

    查干凹陷屬于銀根?額濟納旗盆地東北端查干德勒蘇坳陷內的一個次級構造單元，其盆地基底為古生代時期華北板塊、哈薩克斯坦板塊和塔里木板塊交接部位形成的陸緣或島弧褶皺帶，具有古生代造山帶的性質。研究區及鄰區印支期侵入巖形成於造山帶強烈擠壓陸內俯沖的構造環境；燕山早期侵入巖形成於由擠壓轉向拉伸、造山帶的增厚陸殼開始發生伸展垮塌的構造環境；早白堊世火山巖形成於造山期后進一步發生伸展垮塌的區域構造環境。
  2. 4. the feature of linearity and ring structures shows that three structural lenses that are formed by the junction of four level i faults in alignment are helpful to the formation of ore - body. in longshujiao and longtouzhai lenes there are many intersectant east - north and west - north low level faults, so they are concentration place of ore - bodys

    4 、從遙感線環構造特徵上看，區內的四條主要東西向線性構造，是級控巖控礦線性構造，它們在走向上弧形交接形成三個構造透鏡體，是成礦的有利部位。
  3. After switching on powerful arc lights, they saw great stalagmites - - some of them over forty feet high - - rising up like tree - trunks to meet the stalactites suspended from the roof

    他們打開強力弧光燈，看見一株株巨大的石筍，有的高達40英尺，象樹干似的向上長著，與洞頂懸掛下來的鐘乳石相接。
  4. As a new type gear transmission, double circular arc profile bevel gearing carries out its transmission by means of meshing between convex - concave tooth profile in both of the direction of tooth trace and the direction of tooth depth, so it has advantage of high load capacity, long service life, easy forming hydrodynamic oil film between teeth as well as high quality of running - in etc. therefore, more attention has been paid to its application and research in recent years

    作為一種新型齒輪傳動方式，雙圓弧弧齒錐齒輪傳動不論在齒線方向、還是在齒高方向，均為凸、凹齒廓相嚙合，因而它比一般的弧齒錐齒輪傳動的承載能力高，使用壽命長；並且在嚙合過程中兩齒面間容易形成潤滑油膜，具有良好的跑合性能，所以對它的應用和研究日益受到人們的重視。
  5. Disk chuck has been adopted in 74 series vertical shaft rotary die grinders, which can grind to the internal hole, excircle of large workpieces and workpieces with shoulders. die can work and grind to r - arc without removing guede - pole, and grinder head can rotate in the range from + 45o to - 45o. accordingly, the life of die is longer than before and accuracy of the die is stable

    74系列立軸圓臺模具磨床採用花盤式工作臺，可對較大工件內孔、外圓和帶有臺肩的工件進行磨削，沖模模具可以不拆導向柱進行磨削及r弧磨削，提高模具使用壽命，保證模具使用精度，磨頭可旋轉45 。
  6. The axial magnetic field distribution on center surface of contact gap and contact piece are calculated when the current is at peak. it can be found that the intensity of axial magnetic field and radial magnetic field uniformity are strengthened after the iron core is put into, this helps to improve the stability of the vacuum arc

    計算了電流峰值時觸頭間隙中心平面和觸頭片上的縱向磁場分佈，可以看出加入鐵芯后縱向磁場強度和徑向磁場均勻性增強，這有利於提高真空電弧的穩定性。
  7. Considering different soil spring models for vertical fault movement and horizontal fault movement, two damage cases of pe pipeline in ji - ji earthquake have also been simulated. the large deformation of a buried pipeline under fault movement is investigated in the 4th chapter. to examine the inelastic behavior of buried pipelines, the parametric studies on pipe material property, diameter ( d ), diameter - to - thickness ratio ( d / t ), crossing angle ( ), as well as soil stiffness, have been conducted using a shell - spring fem method

    對於0 p三90 」的情況，當斷層位移相對管徑還不是很大時（管子內的彎曲應變與軸向拉伸應變相差不大的情況） ，斷層附近管子變形形式與梁相似；當斷層位移相對管徑很大時（管子以軸向拉伸應變為主的情況） ，斷層附近的管子軸線變形為一圓弧，管子表現得像一條沒有彎曲剛度的索。
  8. 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。
  9. It was built in 1420 in the early ming dynasty and renovated in 1977. in the old days, watchtowers placed at regular intervals around the perimeter guarded the wall. the double gate system played an important role in repulsing enemy attacks

    明清時期正陽門城樓與箭樓之間原有一個巨大的甕城，南端呈弧形抹角，箭樓坐落在頂端，甕城南北長108米，東西寬88米，內有空場，四向均有門。
  10. In this dissertation, for the need of engineering, berchand surface is put forward and studied which is refined and enhanced from the common characteristics of gyration surfaces, developed surfaces and normal circular - arc helical surfaces. according to which, many kinds of important surfaces can be structured

    論文從工程需要出發，提出並研究了白川德曲面，這是對回轉面、可展面、法向圓弧螺旋面共性特徵的提煉與升華，據此可以構造和發展出各種有重要應用價值的曲面。
  11. Abstract : based on the previous results of dephosphorization of stainless steel and new developments of eaf steelmaking process, dephosphorization technology of stainless steel is discussed. a weak oxidizing dephosphorization technology is proposed in which c ( carbon ) is added into slag to control furnace atmosphere and slag activity

    文摘:基於不銹鋼脫磷的有關研究結果及電弧爐煉鋼工藝的最新進展，對不銹鋼脫磷工藝進行了分析討論，提出了向渣中加碳控制氣氛及爐渣反應性能，從而實現弱氧化脫磷的工藝方案。
  12. Based on the previous results of dephosphorization of stainless steel and new developments of eaf steelmaking process, dephosphorization technology of stainless steel is discussed. a weak oxidizing dephosphorization technology is proposed in which c ( carbon ) is added into slag to control furnace atmosphere and slag activity

    基於不銹鋼脫磷的有關研究結果及電弧爐煉鋼工藝的最新進展，對不銹鋼脫磷工藝進行了分析討論，提出了向渣中加碳控制氣氛及爐渣反應性能，從而實現弱氧化脫磷的工藝方案。
  13. The linear time perturbation theory is used in this paper, the effects of rotary flow, axial flow and both of them to the arc stability are discussed respectively. the corresponding equations and the boundary conditions are deduced

    本文採用與時間有關的線性微擾理論，分別討論了旋轉氣流、縱向氣流的作用，以及它們共同的作用下電弧螺旋不穩定性的特徵。
  14. Third, draw a unilateral line from every load node to the sink point. the line ' s capacity is the load value of the node and the cost is zero

    從所有負荷節點到匯點各引一條單向弧，弧容量為節點負荷值，弧費用為零。
  15. The integral method is adopted caculate and analyze to amf three - dimension distruction which is the structure of coil type four - pole and the structure of coil type double - pole and study the size of two kind of electrode structure axial magnetic flux density distribution and its fielduniformity. the finite - element method is used simulate that eddy current has effect on amf when contact tray of douple - pole amf structure is slotted or no

    本文採用積分方法對本文設計的線圈式兩極縱向磁場觸頭結構和線圈式四級縱向磁場觸頭結構的縱向磁場三維分佈進行了計算分析。研究了電弧燃燒期間兩種觸頭結構縱向磁場強度的大小、均勻性，利用有限元法模擬線圈式兩極縱向磁場觸頭結構的觸頭盤開槽和不開槽時渦流對縱向磁場的影響。
  16. To further the study of the take - off technical theory in the backstyle high - jump, we make a research into the cuved tosbury take - off cour se of backstyle high - jump. it was pointed out that the backtyle high - jump cucve d run take - off created efficient condition for the earlier change and accumla tion of gravity center and vertical speed of fosbury flop the moving direction t he bady

    為進一步研究背越式跳高起跳理論，對背越式跳高弧線助跑起跳過程進行分析，揭示背越式跳高的優越性在於充分發揮和利用助跑速度提高起跳效果，其實質是弧線助跑起跳為背越式跳高身體重心運動方向的提早轉變和垂直速度的累積創造了有利條件。
  17. It ` s suitable for the bend and deformation of the metal plates and it can roll the round and arcshapes and the cone ones within its specified ranges. it has the function of prebending the plate at both ends. the two lower rollers are the driving ones and can make the horizontal movement ; and the upper is a driven one and can make the up and down movement. the moving manner includes the mechanical and industry, boilers, shipbuilding, metal structure, machine manufacture and other trades, especially for the roll the steel trunks with smaller diameter and longer length in power transmission and trandform and other trades

    該機適用於金屬板材的彎曲成型，可卷制圓形，弧形和一定范圍的錐形工作，並有板材端部預彎功能，本機型兩個下輥為主動輥並可水平移動，上輥為從動輥上下移動，移動形式有機械式和液壓式，傳動軸均採用萬向連軸器連接，它廣泛適應于石油化工鍋爐造船金屬結構及機械製造行業，特別適用於送變電行業等直徑較小長度較長鋼管桿的卷制
  18. Perhaps existing two arcs above in the same direction between two states, adjacency matrix could only record one of them

    原因是兩個狀態間可能有兩條以上同方向的弧，而鄰接矩陣只能記錄兩個狀態間存在的一條弧。
  19. Based on lots of experiments, by combining the progress in mesomechanics with fea computation and analysis, this thesis investigated many parameters " effect on crack with an arc - tip in plain mixed - mode fracture, and compared existing criteria for fracture initiation, fracture direction and fracture mode transition

    本文主要的工作是在試驗的基礎上，結合細觀斷裂力學當前的研究進展，通過有限元計算和模擬分析，研究了平面復合型斷裂中各種力學參量對圓弧尖端裂紋斷裂的影響，比較分析了現有的起裂判據、斷裂擴展方向的判定方法以及斷裂模式的轉換條件。
  20. Steel pipes and tubes for pressure purposes : ferritic alloy steel with specified elevated temperature properties - specification for longitudinally arc welded tubes

    承壓鋼管.具有規定高溫特性的鐵合金鋼.第2部分:縱向電弧焊接管規范
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