預旋度 的英文怎麼說

中文拼音 [yùxuándù]
預旋度 英文
prerotation
  • 預 : Ⅰ副詞（預先; 事先） in advance; beforehand Ⅱ動詞（參與） take part in
  • 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...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  1. Tropical cyclone glenda, the second destructive storm to hit australia in 10 days, had earlier forced the evacuation of hundreds of people in larger towns, shut down oil and gas rigs and disrupted iron ore shipments in the region. meteorologists said the eye of the cyclone passed over the town of onslow, 1, 390 km 860 miles north of the western australia state capital of perth, at 9 p. m. local time

    以及鐵砂礦開采作業已經停止預計這股熱帶氣旋將在未來幾小時之內到達位於澳洲西南海濱度假城市珀斯以北950英里約合1520公里的卡拉瑟市karratha以及澳洲西部擁有1 . 2萬人的畢爾巴拉pilbara地區。
  2. The result indicates that, in the course of the rainstorm in huoshan, there are obvious low - level jet of great intensity, infection of mesoscale shear line, enhancement of plus vorticity which increases intensity of convergence, improves ascending velocity and brings on precipitation, and quick enhancement of helicity which provides the basis to forecast, in addition, convergence of moisture flux and analyzed potential vorticity which reflects baroclinic convective instability sufficiently indicate the characteristics of the rainstorm

    結果表明：此次霍山暴雨發生前後，存在明顯的大強度低空急流，並受到中尺度切變線的影響，而且正渦度的加強引起了輻合加劇，提高了上升速度從而引起降水，同時暴雨發生前螺旋度的迅速增強，也為預報提供了根據，另外水汽通量的輻合以及分析位渦反映出的斜壓對流不穩定都充分體現了這次降水的特點。
  3. 4 ) in a pre - swirl rotator - stator cavities with discrete pre - swirl nozzles and blade - cooling entry holes, the influences of pre - swirl angle and flow parameter on the flow and heat transfer characteristics were numerically investigated. the correlation for average nusselt number vs rotating reynold number or non - dimensional mass flowrate were established. the results show that : advantage of per - swirl inflow is the effect of cooling the blade - cooling entry holes ; pre - swirl inflow increases heat transfer in rotating disk of pre - swirl chamber ; as pre - swirl angle increases, local nusselt number decreases in pre - swirl chamber ; the temperature of stator of inner rotator - stator chamber and per - swirl chamber decreases as rotating reynold number increases ; when the axial mass flowrate maintains constant, heat transfer in the rotating disk of inner rotator - stator cavities does n ' t change as per - swirl mass flowrate increases, while heat transfer in the rotating disk of per - swirl chamber increases ; when the pre - swirl mass flowrate maintains constant, change of the axial mass flowrate has effect on the whole cavity

    結果表明，預旋進氣的優點在於增強了葉片冷卻孔附近的對流換熱效果，局部努謝爾數隨預旋角的增大而有所減小；隨旋轉雷諾數的增加，不論是內轉靜腔室還是預旋腔室的靜盤上的溫度都不同程度的降低：當軸向中心進氣質量流量不變時，隨預旋進氣的質量流量增加，內轉靜腔室的轉盤盤面上的換熱基本沒有變化，而預旋腔室的轉盤盤面上的換熱效果增強；當預旋進氣質量流量不變時，軸向中心進氣的質量流量的改變對整個盤腔都有影響。
  4. Meteorological disaster ( mainly wind damagae, waterlog disaster and drought damage ) was classified by five categories as slight, not serious, medium, relatively serious and serious by the degree of its influence on guangzhou, and divided into 3 ranges in time : short - term ( 2000 2002 ), medium - term ( 2003 2006 ), and long - term ( 2007 2010 ). through the investigation by 57 experts who had been engaged in disatser research for a long time, with application expert of assessment method ( delphi method ) the results showed that wind damage would have the greatest influence on guangzhou among the meteorological disasters. in the coming 10 years, there would be tropical cyclone influence on guangzhou almost every year, which would bring a certain extent of damage that was 10 15 % more serious than that in normal year. waterlog disaster brings less influence compared them with tropical cyclone in short term, but its influence was close to that of tropical cyclone in mid - term and even surpasses that of tropical cyclone in long - term. waterlog damage in forcasting period will be about 10 % more serious than that in normal year

    將氣象災害（主要是風災、澇災和旱災）對廣州市的影響程度分成輕微、偏輕、中等、偏重和嚴重五個級別，在時間上將未來10年分成三個時期：近期（ 2000 2002年） 、中期（ 2003 2006年） 、遠期（ 2007 2010年） ，通過對廣州市57名長期從事災害研究的專家的調查，再運用專家評估法，結果表明：在三種災害中，對廣州市影響最大的是風災，未來10年幾乎每年都有熱帶氣旋影響廣州，造成較大程度的損失，其損失程度約比中等年份偏多10 15 ;澇災對廣州市的影響在近期比臺風小，中期與臺風的影響接近，至遠期的影響超過臺風，整個預測期內比中等年份偏多10左右。
  5. This system also includes an on - line information service through which airline companies can retrieve flight documentation including forecast charts of en - route significant weather and wind temperature data issued by the world area forecast centres at london and washington, weather forecasts for departure, destination and alternate aerodromes, as well as the latest meteorological information of weather radar and satellite images, aerodrome warnings, tropical cyclone information, etc. weather briefings are provided via telephone or video conferencing equipment to flight crew members on request

    該系統也包括一在線資料服務，航空公司可透過此服務提取包括由倫敦及華盛頓世界航空區域預報中心發放的航路上重要天氣及風/溫度資料的預報圖、起飛、目的地及備降機場天氣預報的飛行氣象文件。此外，航空公司亦可提取最新的氣象資料包括天氣雷達圖像、衛星雲圖、機場天氣警報及熱帶氣旋資料等。如有需要，航空預報員可以透過電話或視像會議系統向飛行人員作天氣簡報。
  6. This system also includes an on - line information service through which airline companies can retrieve flight documentation including forecast charts of en - route significant weather and windtemperature data issued by the world area forecast centres at london and washington, weather forecasts for departure, destination and alternate aerodromes, as well as the latest meteorological information of weather radar and satellite images, aerodrome warnings, tropical cyclone information, etc. weather briefings are provided via telephone or video conferencing equipment to flight crew members on request

    該系統也包括一在線資料服務，航空公司可透過此服務提取包括由倫敦及華盛頓世界航空區域預報中心發放的航路上重要天氣及風溫度資料的預報圖、起飛、目的地及備降機場天氣預報的飛行氣象文件。此外，航空公司亦可提取最新的氣象資料包括天氣雷達圖像、衛星雲圖、機場天氣警報及熱帶氣旋資料等。如有需要，航空預報員可以透過電話或視像會議系統向飛行人員作天氣簡報。
  7. Taking an ultimate deflection more than 1 / 50 of calculating span as the determinant term, by the means of numerical analysis and regress equation respectively, this paper discusses the reasonable stretching controlling stress of usual span and reinforcement slabs for design reference

    以極限撓度達到跨度的1 50作為延性破壞的判定指標，本文分別運用數值分析程序試算和回歸方程得出了常用跨度、常用配筋的中強（ 1270mpa ）螺旋肋鋼絲預應力混凝土空心板的張拉控制應力的取值，供設計參考。
  8. The meijiayi mjy channels therapeutic apparatus developed by our company, combines the advanced microcomputer technics with the profound traditional chinese medicine methods as well s the human channelss science, magically takes advantages of modern electronic technics and the outer treatment of chinese medicine, realistically simulated the effects like acupuncture, aprapathy, essage, eating, kin scraping and cupping, etc. which improve the comprehensive effects, especially for the common ailments and geriatric diseases in digest digestive system, respiratory system and nervous system

    旋翼式多流束濕式基表，雙脈沖采樣方式進行數據採集，採用計算機技術進行數據處理顯示控制閥門動作。它採用獨特的卡口安全及保護措施動態安全可靠的ic卡加密機制先進的硬體及軟體的容錯處理性能安全可靠，具有精度高自身功耗低體積小壽命長便於安裝等特點。能準確實現用水計量及實現預付費功能。
  9. Miraball is a powerful advertising tool, making use of the persistence of vision. when a row or several rows of ultra brighter wide angle led spins at 2000 - 2200rpm, the built - in cpu commands the led dots light up or go out at a very accurate pre - programmed sequence, the user ' s desired texts and wild miraculously appear and float inside a crystal - like ball to catch all eyes

    二：魔球是一實用新型的消費前沿動態廣告信息的發布媒體，內置微電腦晶元處理經個人電腦預先編輯后存於記憶體內的圖信息后，按非常精確的時序不斷點亮和熄滅，在一列或數更高速旋轉廣角發光二級管列陣中特定的點，在人眼視覺暫留作用下，用戶想要的圖文就會神奇地浮現在球體內360度的視覺空間中。
  10. Apart from being used in forecasts and warnings issued to the international aviation and shipping communities, the names will also be used officially in information on tropical cyclones issued to the international press. besides, japan meteorological agency has been delegated since 1981 with the responsibility of assigning to each tropical cyclone in the western north pacific and the south china sea of tropical storm strength a numerical code of four digits

    這些名字除了用於為國際航空及航海界發放的預測和警報外，亦是向國際傳媒介發放熱帶氣旋消息時採用的規范名稱。另外，日本氣象廳在一九八一年起已獲委託為每個在北太平洋西部及南海區域出現而達到熱帶風暴強度的熱帶氣旋編配一個四位數字編號。
  11. Based on the day - schedule, short - term load forecast, and monitoring program for spinning reserve, the economic dispatch of east china power grid can be realized, which can ensure time margin for load balancing

    在日計劃編制的基礎上，結合超短期負荷預計及旋轉備用監視程序，對華東電網各省市的口子及直屬電廠實行經濟調度，使調度在進行出力及負荷平衡時有一定時間裕度及科學依據。
  12. As a result of the heightening of mechanical operation speed and the application of new materials and new structures, the nonlinear dynamic behavior in rotating machines is becoming increasingly outstanding and important. nonlinear dynamic phenomena in rotating machines cant be described, explained and predicted by rotordynamics based on linear system theory. along with the deepening and permeating of nonlinear scientific research, the nonlinear vibration of rotor systems has become an attractive field in recent years. from a point of view to set up the distinct corresponding relations between vibration states and failures of rotating machines, main advances in the research of rotor nonlinear vibration are summarized, and typical nonlinear dynamic phenomena and their forming mechanism are also summed up in the paper. the aim of the paper is to enrich the diagnostic knowledge base of rotating machines. 55refs

    由於機械運轉速度的不斷提高和新型材料、新型結構的推廣應用，旋轉機械的非線性動力學行為日顯突出和重要.基於線性系統原理的轉子動力學理論與方法難以對實踐中出現的豐富的非線性動力學現象作出準確的描述、闡釋和預測.近年來，隨著非線性科學研究的深入和滲透，轉子系統非線性振動已成為應用力學和機械工程領域的研究熱點之一.從有利於建立旋轉機械振動狀態集與故障集之間的映射關系出發，綜述了近年來轉子系統非線性振動研究的主要進展，總結了轉子系統中出現的典型非線性動力現象及其產生機理，目的在於豐富旋轉機械故障診斷知識庫.參55
  13. As a new variety of steel wire in our country, the mid - strength ( 1270mpa ) spiral - ribs steel wire has many excellences such as high strength, good ductility, credible felting and anchoring capability witn concrete and so on. the pre - stressed concrete slab with this sort of steel wire has good mechanical property. so it is an ideal substitute to the cold - processed wires traditionally adopted in pre - stressed concrete slabs

    中強（ 1270mpa ）螺旋肋鋼絲是我國研製開發的預應力鋼筋新品種，具有強度高、延性好、與混凝土粘結錨固可靠的優點，以這種鋼絲為配筋的預應力空心板具有良好的力學性能，是傳統用於預應力混凝土空心板的冷加工鋼絲的理想替代品。
  14. Seeing that typhoon has brought great harm to mankind, meterological departments of all countries have attached great importance to the forecast and precaution of tropical cyclones. the prompt development and the wide application of the technology of the satellite remote sensing, radar detection, numerical weather forecast. numerical statistics weather forecast and computer simulation forecast in the field of meterological supervision and forecast has enabled people to improve their forecast level greatly

    鑒于臺風對人類造成的巨大的危害，各國氣象部門都十分重視熱帶氣旋的預報預警工作。衛星遙感技術、雷達探測技術、數值預報技術、數值? ?統計預報技術以及計算機模擬預報技術的飛速發展和在氣象監測預報領域的廣泛應用，使人類對熱帶氣旋的監測預報水平得到了大幅度的提高。
  15. The others appeared in a short time, and were not always associated with severe weather depending on the strength of the mesocyclone as well as weather situation and the other products of radar

    其餘幾次中氣旋維持時間很短，產生這些中氣旋的風暴不一定產生冰雹等強天氣，預報時可在中氣旋強度的基礎上，結合環境條件和雷達的其它產品分析判斷。
  16. The results show that while the mass flow of refrigerant is 1. 85g / s, the inlet temperature of refrigerant is 18. 9, the evaporating pressure is 0. 62mpa, the mass flow of water is 31. 1g / s, and the inlet temperature of water is 36. 9, the refrigerant of miniature evaporator wholly vaporizes in the tube, and the heat transfer rate is 342w. it achieved the demand of design

    經過實驗測試，當製冷劑質量流量為1 . 85g / s ，製冷劑入口溫度為18 . 9 ，蒸發壓力為0 . 62mpa ，水的質量流量為31 . 1g / s ，水的入口溫度為36 . 9 ，此時，螺旋管蒸發器內製冷劑完全蒸發，換熱量342w ，達到了微型蒸發器的預期設計要求。
  17. Presently most of the theoretical method to predict the propeller - induced hull pressure fluctuation is based on the calculation method in which the pressure is induced by pulsating source in infinite flow. the calculation method is adopted and the corresponded computer program is complied. the propeller - induced hull pressure fluctuation due to blade thickness, blade load, cavity thickness and the change of the cavity volume can be analyzed respectively in the computer program

    目前，螺旋槳誘導的船體表面脈動壓力的理論預報方法，大多是以無限流場中點脈動源誘導的周圍流場的脈動壓力的計算方法為基礎的，本文採用該方法編制了計算程序，可以分別考慮槳葉厚度、槳葉負荷、槳葉上空泡厚度及其體積變化在船體表面指定位置上產生的脈動壓力。
  18. The specific methods : 1. to ascertain five control indications including suspended solid content, grain diameter median, oil content, iron bacteria and saprophytic bacteria by carrying out the experiment of core flow ; 2. to ascertain indications of sulfate reducing bacteria and average corrosion rate by carrying out the experiment of revolving corroded test pieces ; 3. to ascertain indications of average scaling rate and total mineralization degree by carrying out the experiment of scaling prediction and sensibility

    具體的做法是：採用巖心流動試驗確定懸浮固體含量、顆粒直徑中值、含油量、鐵細菌和腐生菌五項控制指標；採用旋轉腐蝕掛片實驗確定硫酸鹽還原菌和平均腐蝕率指標；採用結垢預測和敏感性實驗確定平均結垢率和總礦化度指標。
  19. This paper has adopted the low - order surface panel method based on velocity potential to predict the unsteady performance of propeller

    本文採用基於速度勢的低階面元法進行螺旋槳非定常性能的預報。
  20. Sixthly, this article analyses analyzes the influence of such main factors as the rotor whirling speed, the entrance pre - rotating speed, the entrance pressure and the seals clearance on the dynamic characteristics of labyrinth seals

    6 、分析轉子轉速、入口預旋速度、入口壓力、密封間隙等幾種主要因素對迷宮密封動力特性系數的影響。
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