螺旋形槽 的英文怎麼說

中文拼音 [luóxuánxíngcáo]
螺旋形槽 英文
helicoidal groove
  • 螺 : 1. [動物學] （軟體動物） spiral shell; snail; conch 2. （螺旋形的指紋） whorl （in fingerprint）
  • 旋 : 旋Ⅰ動詞1 （旋轉） whirl 2 （用車床切削或用刀子轉著圈地削） turn sth on a lathe; lathe; pare Ⅱ名詞...
  • 槽 : 名詞1 （盛牲口飼料或飲料等液體的器具） trough; manger （for water animal feed wine vat） 2 （兩邊...
  • 螺旋 : 1 （具有螺紋的圓柱體 屬于斜面類的簡單機械） corkscrewspin; screw; spiral; helix 2 （螺旋現象;尾旋...
  1. Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece

    將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義
  2. Computer aided design of the cutting edge profile for spiral fluting cutter

    螺旋槽盤形銑刀刃形廓線的計算機輔助設計
  3. Shipbuilding. shaft lines. keys and keyways for tapers on propeller - shafts. diameters 100 mm to 680 mm. alternative

    造船工業.軸線.直徑為mm mm的螺旋槳軸上錐形體的鍵和鍵槽.可選擇的
  4. Die design of forming pipe spiral groove

    管材螺旋槽成形模具設計
  5. A theory for the analysis of the arbitrarily - shaped helical groove structure is obtained by means of an approximate field - theory

    採用近似場論的方法，獲得了一種分析任意槽形螺旋槽結構的普遍理論。
  6. Considering the influence of high evanescent modes, we have obtained the common theory. by the comparing between theoretical calculation and experimental data, we found the theory can accurately describe the high - frequency characteristic of this kind of slow - wave helical groove structure. then, five representative shapes are chosen and researched particularly ( triangle shape, cosine shape, trapezoid shape, rectangular shape and swallow - tailed shape )

    主要工作成果和創新之處在於: 1 .通過考慮高次模式的影響，獲得了一種更為精確分析任意槽形螺旋槽結構的普遍理論，經與實驗測量值比較，發現它更能準確可靠地描述此類螺旋慢波結構的高頻特性，然後詳細研究了五種槽形狀（三角形槽、餘弦形槽、梯形槽、矩形槽和燕尾形槽）對螺旋槽慢波系統導波特性的影響。
  7. For the first time we investigate detailedly on the theory of the conductor - centered arbitrarily - shaped helical groove structure. we divide the arbitrarily - shaped helical groove into many consecutive small rectangle area to approximate the original groove. the recurrence relation of the admittance is obtained

    首次對具有中心導體軸的任意槽形螺旋槽結構的普遍理論進行了研究，通過以多層矩形階梯來近似代替任意形狀槽的邊界的方法，同時對導納的遞推關系進行了詳細的推導。
  8. ( c ) for the helical swallow - tailed structures with same groove width, the deep groove depth one which is suitable for the use in a interaction system of high power twts, has the largest coupling impedance and the lowest phase velocity in comparison with the other different groove profiles

    （ 3 ）具有相同槽日寬度的燕尾形螺旋槽結構在槽深度較深情況下用作大功率行波管的互作用系統具有最大的耦合阻抗和最低的相速。
  9. The purpose of this study is to investigate the formation of liquid falling film and its flow behavior on the surface of a horizontal twisted and fluted tube used in the case of wet flue gas desulfurization, desalination, and so on

    本文從理論上研究了水平螺旋槽管壁面液膜的形成機理及流動特性，為工業生產過程中高效換熱器的應用提供理論基礎。本文做的主要工作有： 1
  10. Investigation on heat transfer enhancement of the spoon type spirally fluted tubes

    勺形凹槽螺旋槽管強化傳熱研究
  11. Study on heat transfer characteristics in microtube under heating of constant heat flux

    形螺旋槽管傳熱與流體力學特性研究
  12. There are series of excavation shapes experiment and full - field explosion experiment based on the excavation shapes experiment. the pentagon excavation, diamond excavation and spiral excavation are applied in the sandrock tunnel excavation. the analysis of experimental data and the results of experiment proved that the three excavation are apt to use in sandrock tunnel excavation, and the result of explosion is very well and the explosion rate is up to 90 %

    對于砂巖巷道進行了五星掏槽、菱形掏槽、螺旋掏槽，通過爆破實驗數據和爆破結果分析，得到了在砂巖中採用上述三種掏槽形式爆破效果良好，爆破率相對較高；同時，上述三種掏槽方式及其它技術經濟指標，如爆出實體巖石體積等也較好，爆破效率達到90 %以上。
  13. ( b ) when the depth of the groove is relatively shallow, the helical triangle - shaped helical groove has the widest bandwidth, the least dispersion, and the fastest phase velocity

    （ 2 ）當槽的深度較淺時，三角形螺旋槽的通頻范圍最大，且色散最弱，其中波的相速和群速最大。
  14. With summarized a great deal of datum in home and overseas, the paper will discuss performances of liquid spiral groove seal from several aspects, such as its principle, developmental actuality and seal capability. the paper introduces firstly a new brief and fast method that derived from spiral groove seal analytics. this method has been applied in the program system design of out - armed - out - flow spiral groove seal

    首先通過對螺旋槽密封解析法思想的闡述，為實際工程的密封性能分析提供了一種簡潔、快速的判別方法，並開發了一個可以用於外裝外流形式密封性能分析的程序；隨后採用有限差分數值方法，對特定條件下的reynolds方程進行離散化處理，並以此作為密封端面間潤滑薄膜特性研究的理論基礎。
  15. By a large amount of calculations, the influence of the structure dimensions and the dielectric parameters on dispersion characteristic and coupling impedance of this kind of slow - wave structure is obtained. then, the linear beam - wave interaction theories of the arbitrarily - shaped helical groove waveguide and the dielectric into the arbitrarily - shaped helical groove waveguide are deduced. by the numerical calculations, the relationship is got between the small signal gain, bandwidth, electromagnetic " hot " velocity and the electronic beam, the structural parameters

    通過數值計算，獲得了此類慢波結構的色散特性和耦合阻抗隨結構幾何尺寸和介質參數的變化規律;在此基礎上，建立了任意槽形螺旋槽及中心加介質棒的任意槽形螺旋槽行波管的注-波互作用線性理論，並編製程序，計算了管子的小信號增益、帶寬、電磁慢波的「熱」相速與電子注參數、結構參數之間的關系，獲得了增加帶寬或增益的途徑。
  16. The research on the rf characteristics of the conductor - centered helical groove sws. ( a ) in the " cold " system, we found that the changing of depth of the groove has no distinct effects on the phase velocity at the lower frequency region ; but with the increasing of the frequency, the phase velocity and bandwidth are reduced slightly, the structure is more dispersive and the coupling impedance is enhanced

    對具有中心導體軸的矩形螺旋槽慢波系統的高頻特性進行了理論研究： （ 1 ）在冷系統中的研究結果表明：頻率較低時，槽深的改變對相速的影響不是很大，隨著頻率的增大相速略有減小，同時帶寬也有所減小，色散變得稍強，耦合阻抗增大。
  17. The distribution of the liquid film was got, and the effects of helix angle, geometry of the channel, liquid mixing and liquid properties on the liquid film was also studied

    利用fortran語言編程，求解液膜的厚度分佈4研究槽道螺旋角、槽道幾何形狀、流體摻混、流體性質對壁面液膜分佈的影響5
  18. ( b ) the linear fluid model is used to study the conductor - centered helical groove twt. we have analyzed the effects of the beam parameters on the gain and the bandwidth of the twt

    （ 2 ）我們用線性理論模型研究了具有中心導體軸的矩形螺旋槽行波管內的注-波互作用特性，對電子注參量對小信號增益和帶寬的影響進行了分析。
  19. In this dissertation, we have made detailed theoretical study and numerical computing on some new types of helical groove sws including the conductor - centered rectangle - shaped helical groove and the conductor - centered arbitrarily - shaped helical groove ; several important new conclusions and valuable results are achieved and listed as the followings : 1

    本論文從理論研究和數值計算兩方面對一類新型的具有中心導體軸的矩形螺旋槽慢波系統以及我們提出具有中心導體軸的任意槽形螺旋槽慢波系統進行了深入的研究。主要工作成果和創新點在於： 1
  20. The basic principal and general structure of dry gas seal are introduced briefly, and aiming at the characteristics of logarithm spiral curve, the calculation of the pressure to the spiral groove end surface by the theory of narrow groove are given. the method of narrow groove theory and finite element method are utilized to optimize the end surface structure of the spiral groove dry gas seal. the structure of the seal is confirmed on the base of the result

    簡要介紹了干氣密封的基本原理和一般結構，同時針對對數螺旋線形的特點，介紹了窄槽理論對螺旋槽端面的壓力分佈計算，利用窄槽理論和有限元方法對螺旋槽干氣密封端面結構進行了優化，並得出了優化結果，根據這一結果，確定了具體的密封結構。
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