比空氣重的 的英文怎麼說

中文拼音 [bǐkōngqìzhòngde]
比空氣重的 英文
heavier-than-air
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 空 : 空Ⅰ形容詞（不包含什麼; 裏面沒有東西或沒有內容; 不切實際的） empty; hollow; void Ⅱ名詞1 （天空） s...
  • 氣 : Ⅰ名詞1 （氣體） gas 2 （空氣） air 3 （氣息） breath 4 （自然界冷熱陰晴等現象） weather 5 （氣味...
  • 重 : 重Ⅰ名詞（重量; 分量） weight Ⅱ動詞（重視） lay [place put] stress on; place value upon; attach im...
  • 的 : 4次方是 The fourth power of 2 is direction
  • 空氣 : 1 （大氣） air; atmosphere 2 （氣氛） atmosphere 3 （氣閘） air brake4 pneum ; pneumo ; pneumat ;...
  1. Abstract : apply computer simulation to the distribution pattern of air - flow without considering the cold condition of the combustion and compare the flow patterns under different designed circumstances. and the effect of the design of the partition in the air way of the burner on the flow and mixture of gas and air is especially studied. the result shows that the design of partition plays a very important role in strengthening the mixture of gas and air, but increases the loss of the resistance in the air way and the total pressure of the air way in same working conditions needs increasing

    文摘:應用計算機模擬的方法，在不考慮燃燒的冷態情況下，研究了熱風爐燃燒室內的氣流分佈規律.在此基礎上，比較了2種不同設計方案的氣流流動特徵，尤其是研究了燃燒器空氣通道內阻流板的設置與否對空氣和煤氣的流動和混合的影響.結果表明，阻流板的設計對加強空氣和煤氣的混合有著極為重要的作用，同時也增加了空氣管道的阻力損失，在同樣的工況條件下需要提高管道系統的總壓力
  2. By comparing the dry plate pressures drop and distributions of velocities simulated on single valve with those of double valves, it was found that there was intense turbulence in the flow fields around fixed - valve, there were eddy areas between valve side orifices and tray wall, there were eddies above the valves too, these led to the complex behaviors of gas perforating valve, these had a great effect on the gas - liquid mass transfer process. at the same time, in order to prevent the disadvantageous effect of gas between one valve with another on the gas - liquid mass transfer, it was very effective to change the fields of gas perforating valve by folding the edges of valve

    通過對數值模擬得出的單閥和雙閥塔板的干板壓降及流場速度分佈分析對比后發現，固定閥周圍流場存在較強的湍動，閥側孔與塔板壁面區域以及閥體的上方空間存在明顯的渦流區，使氣體穿閥后的行為變得復雜，並對氣液傳質過程產生重大影響；模擬結果表明，為防止和削弱固定閥間的對沖造成的「死區」對傳質帶來的不利影響，通過折邊來改變氣體的氣路是非常有效的，模擬值與實驗值基本得到吻合。
  3. The first successful sustained powered flights in a heavier - than - air machine were made here by wilbur and orville wright on december 17, 1903

    1903年12月17日，萊特兄弟第一次用比空氣重的飛行器進行了有動力的持續飛行。
  4. The first succes * * * ul sustained powered flights in a he * * * ier - than - air machine were made here by wilbur and orville wright on december 17, 1903

    1903年12月17日，萊特兄弟第一次用比空氣重的飛行器進行了有動力的持續飛行。
  5. 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。
  6. In fact, many of these parks suffer some of the nation ' s dirtiest air, rivaling or even exceeding that of our most polluted cities, such as atlanta and los angeles

    事實上，部分國家公園的空氣質量是整個國家最差的，甚至要比一些污染的城市還要嚴重，比如亞特蘭大、洛杉磯。
  7. The blade inner channel cooling is a complex convection - conduction coupling problem. this thesis build a three - dimension. compressible turbulence model, and give a general solve method. with the geometrical model of the glossily rectangle straight channel, the rectangle straight channel with in - line arrays disturb plates, the rectangle straight channel with staggered arrays disturb plates, the rectangle straight channel with slant disturb plates, this thesis compute the flow and heat transfer condition when the cold air path though these channels, and gain the temperature field, pressure field, velocity filed, in addition. this thesis also analyze the influence of the different channel height, the different channel materials, the different channels, and gain the function relation between he nusselt number, friction factor and reynolds number. this thesis is emphasis on the new heat transfer enhancement structure, that is, disturb plates, with the comparison with the glossily channel and channel with pin fins, the heat transfer enhancement effect of the former is better, and the conclusion can be used in the design of aircraft blade

    葉片內部通道冷卻是一個復雜的對流?導熱耦合傳熱問題，本文在分析葉片內部通道冷卻的流動與傳熱情況的基礎上，建立了三維、可壓縮紊流的物理模型，得到了通用的求解辦法；利用不帶擾流片的矩形直通道、帶順排擾流片矩形直通道、帶叉排擾流片、帶傾斜擾流片的矩形直通道的幾何模型，計算了冷卻空氣通過這幾種通道時的流動與換熱情況，得到了各種不同情況下計算區域的溫度場、壓力場、速度場；在此基礎上分析了不同的通道高度、不同的葉片通道材質對葉片內部通道冷卻的影響，並整理得到了各種通道形式下，努謝爾數和阻力因子與雷諾數的函數關系；本文重點研究了新型的葉片內部通道冷卻強化傳熱措施?帶擾流片的內部冷卻通道的強化傳熱效果，通過與光滑矩形直通道、帶針肋通道的冷卻效果的比較，表明了這種新型鮚構的優勢，對于葉片內部通道冷卻結構的設計可以起到指導的作用。
  8. Adverse effects of ambient concentrations of air pollutants on hospitalization rates for asthma are evident. measures to improve air quality in hong kong are urgently needed

    空氣污染為兒童及長者帶來的禍害遠遠比成年人口嚴重，因此改善空氣質素實在刻不容緩。
  9. Aerospace ; mass breakdown for aircraft heavier than air ; group mass statement

    航空和航天.比空氣重的飛機的質量分解.分組分質量說
  10. Aerospace ; mass breakdown for aircraft heavier than air ; detail mass statement

    航空和航天.比空氣重的飛行器的質量分解.詳細質量說
  11. Aerospace ; mass breakdown for aircraft heavier than air ; group mass statement ; condensed version

    航空和航天.比空氣重的飛機的質量分解.組質量說明.壓
  12. Aerospace ; mass breakdown for aircraft heavier than air ; main mass groups and terms of mass ; survey

    航空航天.比空氣重的飛機的質量分解.主要質量組和質
  13. Aerospace ; mass breakdown for aircraft heavier than air ; main mass groups and terms of mass ; definitions

    航空航天.比空氣重的飛行器的質量分解.質量的主要分
  14. The whole pattern of heavier - than - air construction are all precisely similar

    比空氣重的建築物的模式驚人的相似
  15. That day they became the first people to demonstrate sustained flight of a heavier - than - air machine under the complete control of the pilot

    他們在那天也率先成為完全掌控這架比空氣還重的機器而持續飛行的人。
  16. Besides, the effect on the performance caused by a variety of water drop types and contents is discussed. a model for computing the loss and deviation angle is developed using stage - stacking method on average streamline

    著重分析了含有不同類型以及不同含量的水滴的來流對風扇壓氣機特性的影響，並且將計算結果與風扇壓氣機在來流為空氣下的特性進行對比分析。
  17. It is a colourless, odourless and tasteless gas, slightly heavier than air

    它是一種無色、無溴、無味的氣體，比空氣稍重。
  18. Particles in beijing ' s air are still 40 to 50 percent worse than in los angeles, the most polluted city in the united states

    北京空氣中的浮遊微粒仍比洛杉磯嚴重40 %至50 % ，而洛城是美國污染最嚴重的城市。
  19. Sea and air are divided by a viscous curtain ; beneath the curtain is an element weighing 800 times as much as air, utterly dark a few fathoms down, and with pressures that would pulp a man at 3, 000 feet

    海洋和空氣被一種粘性的「簾布」分開， 「簾布」之下是一種比空氣重800倍的成分，向下幾英嚼完全黑暗，在3000英尺深處的壓力會把人壓成醬。
  20. Aerospace ; mass breakdown for aircraft heavier than air ; dimensional and construction data

    航空航天.比空氣重的飛行器的質量詳細分解.尺寸和結
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