螺旋管段 的英文怎麼說

中文拼音 [luóxuánguǎnduàn]
螺旋管段 英文
pigtail
  • 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...
  • 管 : Ⅰ名詞1 （管子） pipe; tube 2 （吹奏的樂器） wind musical instrument 3 （形狀似管的電器件） valve;...
  • 段 : Ⅰ量詞（部分） section; segment; part; paragraph; passage Ⅱ名詞（姓氏） a surname
  • 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. 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旋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 ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋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、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋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。
  2. Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed

    本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。
  3. The economic success of kozesnictvi - milena cerna is coined / shaped by products and service services such as clothes, coats, france in addition to germany, manufacture and artificial. one can even receive offers on sale, rabbit, sheep and leather as well as on leather clothing with kozesnictvi - milena cerna in outstanding quality

    是一家高效的工業型企業，企業生產法國，旋緊螺栓，發行、轉交、供應，電抗器，產品、製品，龍頭、旋塞，整流器、整流管、閥、閥門，部分、片段，快的、迅速的，賣、出售，軟管、套管，工業機械裝置，空氣范圍內高水平的產品。
  4. This article is pointed out that the internal control system of our country commercial bank still is in stage newly established, and the internal control ground range international standard still has the equivalent distance, and the real effect is also too not ideal ? controlling the questions that exist in the system construction inside in accordance with our country commercial bank, and on the foundation to spirit that " the guide to the commercial bank internal control " according to the chinese people bank issuing is recently passed on and uses for reference the advanced interior accuse management practice experience of abroad commercial bank, this article puts forward building the tentative plan of pdca ' s internal control that fits our country national condition system o this tentative plan is stressed in the optimum research to realize the method of internal control system, and the substance is building the control system that the circular spiral moves upward of interior accuse policy decision - interior accuse execution - interior accuse control - interior accuse policy decision,

    本文通過對我國商業銀行內部控制現狀進行調查研究后指出，我國商業銀行的內部控制體系還處于初級階段，內部控制水平距離國際標準還有相當的距離，內部控制的實際效果也不太理想。針對我國商業銀行內控體系建設中存在的問題，根據中國人民銀行最近發布的《商業銀行內部控制指引》所傳達的精神並借鑒國外商業銀行先進的內控管理實踐經驗，文章嘗試把符合iso9002標準的質量管理方法（ pdca循環方法）和內控制度建設結合起來，在此基礎上提出建立一個符合我國國情的pdca內部控制體系的設想。該設想著重於內部控制體系最佳實現方式的研究，實質是建立一個以內控決策系統為中心，充分體現內控管理與監督，從內控決策? ?內控執行? ?內控監督? ?內控決策的不斷循環螺旋上升的控制體系。
  5. By means of experimental measurements, development and formation of the spiral flows in pipes were studied in this dissertation. also the influence of kinds of parameters and entrance condition were investigated

    本文主要通過實驗測量的手段研究管內螺旋流的形成與運動規律，以及螺旋流發生裝置的幾何參數、入口條件等對螺旋流的形成和發展產生的影響。
  6. The authors consider that the customer knowledge management ( ckm ) is composed of four phases, which are customer knowledge capture, integration, share and utilization. in the paper, a technical architecture framework is introduced and several key technologies are also analyzed, which may help organizations keep an overview of ckm in its implementation

    本文從知識流動的角度，將客戶知識管理的流程分為客戶知識獲取、整合、共享和利用四個螺旋上升的階段，然後根據這四個階段所涉及到信息技術，提出一個客戶知識管理的技術框架，最後討論了幾種影響客戶知識管理實施的核心技術。
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