螺旋形件 的英文怎麼說

中文拼音 [luóxuánxíngjiàn]
螺旋形件 英文
screwing shaped objects
  • : 1. [動物學] (軟體動物) spiral shell; snail; conch 2. (螺旋形的指紋) whorl (in fingerprint)
  • : 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...
  • : Ⅰ量詞(用於個體事物) piece; article; item Ⅱ名詞1. (指可以一一計算的事物) 2. (文件) letter; correspondence; paper; document
  • 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(等傾角線)槽,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.經過理論分析和實際切削實驗,研究了針對該類型工的片銑刀直徑選擇、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.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,對其他相似類型零的加工亦具有參考意義
  2. Compared with the mud on wall form hole technology, clash stake technology or vibration sink pipe technology used in complex foundation stake forming, it has advantages of no vibration, no pollution, and no noise. in addition, since the concrete pressed into the drill stem sent vibration free concrete to the pump, so it is eas y to ensure the quality of the stake body. compared with the mud on wall and dry work form hole technology, the side obstruction and end obstruction of screw drill press concrete stake have all been accordingly improved, the weight bearing is better, and the transmutation of the complex foundation is less

    其中,鉆孔壓灌混凝土成樁技術自研製以來,已在多項復合地基工程中進行了應用,較好地解決了軟弱地層成孔困難的問題,適應地質條范圍廣,成樁速度較快,工期短、工效高;與復合地基成樁時的泥漿護壁成孔工藝、振沖樁工藝或振動沉管工藝施工比較,具有無振動、無污染、無噪音的優點;另外,壓入鉆桿內的混凝土為泵送免振混凝土,因此樁體質量易於保證;與泥漿護壁和干作業成孔工藝相比,鉆孔壓灌混凝土成樁的側阻和端阻都有相應的提高,樁的承載性能較好,復合地基的變較小。
  3. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討,取得以下主要成果:一、結合小灣工程導流洞改建,對高水頭( 252m ) 、大泄流量( 1400m ~ 3 s )條流式豎井中的水流運動特徵進行了比較全面的測量,包括空腔態、徑向流速分佈及井壁壓強等;二、提出了豎井空腔段水流水力計算方法,其計算結果與實測值吻合良好;三、利用試驗與計算結果,對流式豎井的消能機理進行了探討,對豎井各部分的消能能力有了總體認識;四、對豎井下部消力井的合理井深進行了優化試驗研究,發現消力井合理深度為0 . 9d左右;五、通過試驗研究,歸納出豎井水流總摻氣量估算方法,為導流洞排氣方案的設計提供了參考依據;六、在高水頭、大流量條下,豎井空腔段下部流速很高,盡管水流運動引起的離心力可以確保井壁壓強保持正壓,但空化數依然較低,因此豎井的空化空蝕始終是工程界關注的重大問題。
  4. Woven wire mesh series : stainless steel wire mesh, brass wire mesh, copper wire mesh, phosphor bronze wire mesh, barbecue grill mesh, crimped wire mesh, low carbon steel wire mesh, mild steel wire mesh, black wire cloth, window screening netting, vibrating sieving mesh, filter for gas and liquid, conveyer belt, chain link fence, galvanized square wire mesh, hexagonal wire mesh

    此網帶由雙股右或由雙股左盤條與一根串條連接而成,網帶拼接方便,網眼一般小於單股加強編織的網眼,編織牢固,不易變,維修方便。能用於高溫的自動流水線,輸送重物,機械工業上零的熱處理,各種較大物品的烘乾。
  5. The results indicate that the ratio of span to rise, the ratio of reinforcement and the stretching controlling stress are the three primary influencing factors to the failure pattern of the slab. in addition, the relationships between the ratio of deflection to span and the ratio of span to rise and the stretching controlling stress submit to linear curves, the relationship between the ratio of deflection to span and the ratio of reinforcement submits to a quadratic parabola curve

    運用數值分析程序計算了175組不同跨高比、配筋率、張拉控制應力的中強( 1270mpa )肋鋼絲預應力空心板,結果表明跨高比、配筋率、張拉控制應力是影響空心板破壞態的主要因素,且構撓跨比與跨高比和張拉控制應力呈線性關系,與配筋率呈二次拋物線關系。
  6. A part or surface, such as a wing, propeller blade, or rudder, whose shape and orientation control stability, direction, lift, thrust, or propulsion

    翼剖面;機翼;翼面一個部或平面,如機翼、槳葉、方向舵等,其狀或方位控制穩定性、方向、抬升、沖擊或驅動
  7. Flanges and their joints - gaskets for pn - designated flanges - part 2 : spiral wound gaskets for use with steel flanges

    法蘭及其連接. pn標示法蘭用墊圈.第2部分:與鋼法蘭一起使用的繞制墊圈
  8. The main works are shown as followings : in order to get best economic benefits and quickest time response, the advantages and shortages of existing methods for machining twin - screws are analyzed. in view of the production of co - rotating twin - screw is various and mostly in small batch, a new approach for forming cylinder helical surface with milling cutter is put forward. it presents the theoretical foundation for machining of twin - screw

    論文主要工作有如下幾點:針對同向雙桿產品零的多品種、小批量的生產特點,為了取得最佳經濟效益和快速地時間響應,在查閱了雙桿加工有關的國內外文獻資料,研究分析了雙桿各種現有的加工方法的優缺點,提出了一種新的加工方法? ?用圓柱立銑刀成加工雙面。
  9. These applications, as in most machine elements, have developed into many standard forms, such as spur, bevel, helical, and worm gears

    大多數機器元的這些應用已經發展成許多標準式,例如柱齒、傳動齒輪、齒輪及渦輪齒輪。
  10. Standard test method for thermal deflection rate of spiral and helical coils of thermostat metals

    熱雙金屬熱偏轉率試驗方法
  11. Without any hypothesis of the propeller ' s geometry, the surface panel method satisfy the body surface boundary condition on the fact body surface, and make the geometry representation of the propeller more precise, the mathematical model is more perfect

    面元法是在實際物面上滿足物面邊界條,沒有對槳的幾何狀做任何假設,能更精確地描述槳的復雜幾何狀,其數學模型更加完善。
  12. The influence factors and control procedures of ductility of flexural mechanics of reinforced concrete is analyzed. with experiments of prestressed hollow bats reinforced with 800mpa spiral - ribs steel bars, the relation of ductility of steel bar and component is discussed, the influence factors and control procedures of ductility of flexural mechanics of prestressed concrete is analyzed. through the theory analysis and calculation, the recommendation fo

    本文在理論分析基礎上結合800mpa肋鋼絲預應力主心板的試驗,探討鋼筋延性與構截面延性、構位移延性的關系,研究預應力混凝土受彎構在單調荷載作用下截面延性和位移延性的影響因素及其影響規律進而為控制構延性即破壞態提供相應的方法和依據。
  13. Numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation. it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source. the flame area which has developed from the fire source is an area of chemical reaction caused by combustion. even if grids in the vicinity of the fire source are made fine, it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface. therefore, we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results. it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall. the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume

    運用cfd進行數字模擬,以了解縱向通風隧道內熱煙氣流的特性.通過模擬發現對火源進行模擬非常重要,熱煙氣流特性受火源位置的影響很大,並且對火源模擬方法很敏感.火源生成的火焰區是燃燒引起的化學反應區域.即使火源附近的木垛排列完好,也很難在考慮這些化學反應條下模擬熱生成區域.建議考慮縱向通風隧道內火焰狀並對它進行數字模擬.模擬結果與試驗結果非常吻合.試驗證明,在縱向通風隧道內,熱煙氣流從靠近墻體火源處順風向隧道中心蔓延.數字模擬結果發現,火災羽流造成的上升空氣會在墻體和羽流之間成一個渦流區
  14. The thesis presents an effective method for the design and modeling of ltcc embedded capacitors and inductors, based on which the multi - layer capacitors and inductors are designed and realized. the measured results agree very well with the electromagnetic designed responses, which shows the validity of the design and implementation

    提出了ltcc內埋式元完善的設計方法和流程,據此設計和製作了平面曲折電感以及多層垂直交叉型電容,測量與模擬結果的吻合驗證了設計和實現方法的正確性。
  15. Installation holes for inserts, screw thread, helical coil, self - locking - design standard

    線圈自鎖式紋鑲嵌安裝孔.設計標準
  16. Inserts, screw thread, helical coil, self - locking, in corrosion resisting steel fe - pa3004

    耐腐蝕鋼fe - pa3004自鎖緊線圈紋插入
  17. The basic requirements include good cyclonic inflow i. e. for the northern hemisphere, inward spiralling in an anti - clockwise sense at the lower levels for the initial spin - up process, and good outflow channels at the upper levels for effective ventilation. the convergence of air at the lower levels and divergence aloft imply a vertical circulation which is schematically shown in the following cross - sectional diagram

    熱帶氣的誕生及發展的基本條是:在大氣低層必須有充份的氣式氣流輻合(在北半球,沿反時針方向地流入) ,在大氣高層要提供足夠的氣流外溢通道,這樣才可以建立有效的通風機制。
  18. Otherwise, further development and intensification will be inhibited. the basic requirements include good cyclonic inflow i. e. for the northern hemisphere, inward spiralling in an anti - clockwise sense at the lower levels for the initial spin - up process, and good outflow channels at the upper levels for effective ventilation

    熱帶氣的誕生及發展的基本條是:在大氣低層必須有充份的氣式氣流輻合在北半球,沿反時針方向地流入,在大氣高層要提供足夠的氣流外溢通道,這樣才可以建立有效的通風機制。
  19. The basic requirements include good cyclonic inflow ( i. e. for the northern hemisphere, inward spiralling in an anti - clockwise sense ) at the lower levels for the initial spin - up process, and good outflow channels at the upper levels for effective ventilation. the convergence of air at the lower levels and divergence aloft imply a vertical circulation which is schematically shown in the following cross - sectional diagram

    熱帶氣的誕生及發展的基本條是:在大氣低層必須有充份的氣式氣流輻合(在北半球,沿反時針方向地流入) ,在大氣高層要提供足夠的氣流外溢通道,這樣才可以建立有效的通風機制。
  20. Rubber hoses and hose assemblies - rubber - covered spiral wire reinforced hydraulic type - specification

    橡膠軟管和軟管組.橡膠包覆金屬絲增強的液壓用類型.規范
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