螺旋取向 的英文怎麼說

中文拼音 [luóxuánqǔxiàng]
螺旋取向 英文
screwing orientation
  • 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...
  • 取 : Ⅰ動詞1 （拿到身邊） take; get; fetch 2 （得到; 招致） aim at; seek 3 （採取; 選取） adopt; assume...
  • 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. Application shall be filed with the competent civil aviation authority under the state council by the manufacturer for export airworthiness certificate with respect to the export of civil aircraft and its engines, propellers and on - board equipment

    出口民用航空器及其發動機、螺旋槳和民用航空器上設備，製造人應當向國務院民用航空主管部門申請領取出口適航證書。
  3. What is new is the application, which by an inversion of the energy flow in its operation, turns the archimedes screw trough pump into a power generator for the extraction of energy

    水力螺旋發電機的獨到之處在於對水流能量進行逆向利用，把阿基米德螺旋泵轉變成一個可以從水流中提取能量的發電機。
  4. 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：針對同向雙螺桿產品零件的多品種、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，在查閱了雙螺桿加工有關的國內外文獻資料，研究分析了雙螺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? ?用圓柱立銑刀成形加工雙螺桿螺旋面。
  5. Changing the diameters and fixing angles of milling cutter can meet the machining requirements of helical surface. this method has been applied in the process of manufacturing twin - screw in rubber and plastic mechanics, which simplifies the process route and shortens the prepare time in production and at the same time saves the cost and improves technical and economic benefits

    通過改變圓柱立銑刀的直徑和加工安裝角度來滿足螺旋面的加工要求，該方法已在橡塑機械用同向雙螺桿的加工中得到應用，縮短了加工工藝路線，減少了生產準備時間，節約了加工成本，取得了良好的技術經濟效益。
  6. Article 35 application shall be filed with the competent civil aviation authority under the state council for production certificate and maintenance certificate for the production and maintenance of civil aircraft and its engines, propellers and on - board equipment

    第三十五條生產、維修民用航空器及其發動機、螺旋槳和民用航空器上設備，應當向國務院民用航空主管部門申請領取生產許可證書、維修許可證書。
  7. This paper puts forward a new bulk taking equipment project - screw and gas sucking - taking equipment, first the paper analyses the movement of bulk material in the screw slot, and analyses the materials movement law under the influence of the varitational room between screws and the airflow qualitatively, establish the equation of movement of the stream of gas and solids bulks in screw slot and build up the law of material vertical transportation and airflow radial speed distribution in screw slot

    論文提出一種新的散貨取料裝置方案? ?螺旋氣力吸取料裝置，論文從物料在螺旋槽中的運動分析開始，定性分析了物料在變螺距螺旋空間和氣流共同作用下運動規律，建立了物料與空氣沿螺旋槽輸送的運動方程，確定物料的垂直輸送速度與氣流速度在螺旋槽內的徑向分佈規律。
  8. The relationship between structure and rotatory direction of 1, 2 - disubstituted ferrocene and its derivatives is analyzed based on the helix theory proposed by the authors

    摘要根據筆者所提出的螺旋理論，對1 ， 2 -二取代二茂鐵及其衍生物的結構與旋光方向間的關系進行了分析。
  9. Article 34 application shall be filed with the competent civil aviation authority under the state council for type certificate for the designing of civil aircraft and its engines, propellers and on - board equipment

    第三十四條設計民用航空器及其發動機、螺旋槳和民用航空器上設備，應當向國務院民用航空主管部門申請領取型號合格證書。
  10. Where a civil aircraft and its engines, propellers and on - board equipment, for which a type certificate has been issued in a foreign country, are produced for the first time in china, the holder of the type certificate shall file an application with the competent civil aviation authority under the state council for type validation certificate

    已取得外國頒發的型號合格證書的民用航空器及其發動機、螺旋槳和民用航空器上設備，首次在中國境內生產的，該型號合格證書的持有人應當向國務院民用航空主管部門申請領取型號認可證書。
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