正壓大氣 的英文怎麼說
中文拼音 [zhēngyādàqì]
正壓大氣
英文
barotropic atmo here-
Inertial instability barotropic advection of potential vorticity the subsidence of the large value of potential vorticity above cyclone and geostrophic adjustment process is dynamical factors which make the cyclone developed violently
慣性不穩定,正壓位渦平流以及正壓位渦大值下沉至氣旋上空和地轉適應過程是氣旋強烈發展的動力因子。Positive pressure is vented to atmosphere
正壓排入大氣。The square pattern has been obtained for the first time in dielectric barrier ar / air discharge at atmospheric pressure by using the double water electrodes and its spatio - temporal dynamics is measured by optical method. the phase diagram of pattern types as a function of air concentration and applied voltage by fixing other parameters is given
本論文採用特殊設計的雙水電極介質阻擋放電實驗裝置,首次在氬氣與空氣的混合氣體中獲得了大氣壓常溫下的穩定正方網格斑圖,並對其進行了時空動力學測量。Only when it takes humidity ratio h / ? as independent variable instead of absolute humidity h in researching and calculating the influence degree of the humidity on the discharge voltage, the emendation coefficients of relative air density and humidity can be independence, and can reflect the influence degree of atmospheric parameters on outer insulation discharge voltage actually
當以比濕h代替絕對濕度h為自變量研究和計算濕度對放電電壓的影響程度時,相對空氣密度校正系數和濕度校正系數才能相互獨立,才能真實地反映大氣參數對電氣設備外絕緣放電電壓的影響程度。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。The results show that, comparing with the gas pressure drops calculated by the modified ergun equation, in the cases of the gas reynolds number is small, due to the presence of the dead space, the observed p in the experiments are bigger than that obtained by calculation, and when the gas reynolds number is large, because of the small interfacial viscous drag - force between gas and liquid, the p observed are smaller than that obtained by calculation
結果表明在氣相雷諾數較小時,由於停滯孔隙率的存在,實測壓降值比修正厄根方程計算的值大;氣相雷諾數較大時,氣液界面上產生的粘性曳力較小,實測壓降值比修正厄根方程計算的值小。The circulation of positive pna index pattern is prominent in the case of persistent forcing of negative ssta in west wind drift region or positive ssta in tropical eastern pacific, which is the typical ssta pattern during el nino peak - mature phase
西風漂流區持續負ssta時或者熱帶中東太平洋持續正ssta時,阿留申低壓均有所加強,正pna指數型的大氣環流特徵顯著。而當相反符號的ssta持續作用時,大氣中阿留申低壓減弱,對應pna指數為負。On base of results above, composite model of ssta in pacific and circulation anomaly are constructed for analysis their evolution. during mature phase of el nino usually in winter, positive ssta dominates in tropical eastern ocean and negative ssta dominates in west wind drift district in mid - latitude ocean, correspondingly the pna index of 500 hpa geopotential height is positive which means the aleutian low gets strong, and the situation is somewhat inversely during la nina phase of ssta
合成位相反映了太平洋ssta演變特徵,以及相對應的大氣環流異常特徵:當西風漂流區處于暖態而熱帶中東太平洋海溫偏低時,合成大氣模型當中阿留申低壓減弱, 500hpapna指數為負異常;當西風漂流區處于冷態,熱帶中東太平洋處于暖態( elnino峰值?成熟期ssta典型分佈) ,合成大氣模型中阿留申低壓加強, 500hpapna指數為正異常。When the flue gas and dust past through electrical fields, they caused impact with positive and negative ion and electron between electrical electrodes to charge electric. the charged particles move and are accumulated to difficult electrical electrode due to effect of electric field force. through rapping method, the dust leaves electric electrodes and drop into the collection hopper, and the remove the dust by transportation system
是一種煙氣凈化設備,它的工作原理是:煙氣中灰塵塵粒通過高壓靜電場時,與電極間的正負離子和電子發生碰撞而荷電或在離子擴散運動中荷電,帶上電子和離子的塵粒在電場力的作用下向異性電極運動並積附在異性電極上,通過振打等方式使電極上的灰塵落入收集灰斗中,使通過電除塵器的煙氣得到凈化,達到保護大氣,保護環境的目的。Researching and analyzing on the test results of the influence of atmospheric parameters on outer insulation discharge voltage and its various emendation methods, it can be concluded that : with the change of relative air density, its humidity ratio h / ? will also change even though the absolute vapor mass ( absolute humidity h ) of the air is constant. consequently, the influence degree of the humidity on the discharge voltage should change, too
本文通過對以往的大氣參數對外絕緣放電電壓影響的試驗成果及各種校正方法的研究分析認為:隨著相對空氣密度的變化,即使空氣中所含水氣的絕對質量(絕對濕度h )保持恆定,其比濕h也會變化,必然地,濕度對放電電壓的影響程度也會變化。With the research of the evolvement features of barotropic and baroclinic atmosphere flow fields, the mechanism has been studied of the formation, development and die out of the heavy rainfall which occurred in wu - han during the period of 21 - 22, july 1998. the results are shown as follows : the evolvement of the rainstorm has a close relation to the barotropic component of the real atmospheric flow filed. and the barotropic component is, to a certain degree, also responsible for the coupling characteristics of high - and low - level jets
本文從研究大氣正、斜壓流場的演變特徵入手研究了1998年7月武漢的一次強暴雨發生、發展、消亡全過程的機理,研究結果表明: ( 1 )未經過尺度分離的實際大氣流場正壓分量的演變與此次暴雨的醞踉、發展和消亡相對應,並且正壓分量在一定程度上反映高、低空急流耦合特徵。The characteristics of precipitation anomalies in summer, previous and simultaneous ssta and preceding winter accumulated snow depth anomalies corresponding to positive and negative phases of 10 - yr mode and 25 - 30 - yr mode are discussed respectively. no matter for 10 - yr mode or for 25 - 30 - yr mode, reverse characteristics corresponding to positive phases and negative phases appear in the above fields. it proves that the decadal variation of sah have a good relation to the decadal variation of other key element of climate system and we can regard sah as a strong signal of the anomalies in the climate system
( 4 )夏季南亞高壓東西振蕩具有明顯的年代際變化特徵,本文分別討論了對應於10年周期態的正位相年和負位相年及25 - 30年周期態的正位相年和負位相年時夏季我國降水距平、前期及同期海溫距平及前冬青藏高原積雪距平的分佈特徵,發現無論是10年周期態還是25 - 30年周期態,對于夏季南亞高壓東西振蕩的正位相年和負位相年以上各要素場呈現為很好的反位相特徵,說明夏季南亞高壓的年代際變化與氣候系統中其他要素的年代際變化具有很好的關聯性,可將南亞高壓看作氣候系統中大氣子系統異常的強信號,通過分析南亞高壓的年代際異常可以更直接地研究和預測區域氣候異常。This paper suggests that the supply air should be provided in approximately a little bite larger volume than the air being exhausted
為防止室外空氣的滲透,滿足客房正壓要求,應使新風量略大於排風量。The corrugated tank made of high quality cold - rolled - steel sheet manufactured with special production line. it can swell up or shrink compensating the oil from atmosphere. protect and delay the oil and the insulation against degradation, therefore enhance the operation reliability and free of maintenance under normal conditions
全密封變壓器與普通油浸式變壓器相比,取消了儲油櫃,由波紋油箱的波翅代替油管作為冷卻散熱元件,波紋油箱由優質冷軋薄鋼板在專用生產線上製造,波翅可以隨變壓器油體積的脹縮而脹縮,從而使變壓器內部與大氣隔絕,防止和減緩油層的劣化和絕緣受潮,增強運行可靠性,正常運行免維護。The temporal, spatial and frequency - field characteristics are discussed. the validity of the corresponding empiric formula is analyzed and the atmospheric effects and correction method are investigated in the data analysis of the ground - based observations. the atmospheric effects on the gravity observations are analyzed and detected using the gravity data recorded with the superconducting gravimeters at the global geodynamic project ( ggp ) stations
利用實測地面氣溫、氣壓資料獲得大氣負荷效應時間序列的數值結果,研究大氣影響的時間、空間和頻率特徵,分析經驗公式的有效性,研究地面觀測和數據分析大氣影響和改正的方案;利用ggp臺站超導重力觀測資料,分析檢驗大氣重力影響;分析igs臺站大氣位移改正的可能性Meanwhile, hurricane experts are watching a tropical depression in the western atlantic that appears to be on a path that would take it into the caribbean by the end of this week
與此同時,颶風專家正在觀測一西大西洋的熱帶低氣壓,該氣壓看起來有可能在本周末進入加勒比海。His country is facing international pressure to spell out targets for taming greenhouse gas emissions, which are trapping more heat in the atmosphere and threatening dangerous climate change
中國正面臨國際社會期望其為減排溫室氣體設定具體目標的壓力。大氣層中溫室氣體會造成溫室效應,引起危險的氣候變化。Selective absorption of electromagnetic wave. adw employing gases which do n ' t absorb the laser energy can form a gas urtain " whose pressure of the two sides is equal to the low pressure of laser cavity and the ambient circumstance pressure respectively so it can isolate the higher pressure ambient air from entrancing into the laser cavity and maintain the hel ' s running normally
氣動窗口利用對激光器輸出波長沒有任何吸收作用的特殊氣體作為窗口工作介質,並根據氣體動力學部分相關原理,能生成一個具有與激光腔低壓和環境大氣高壓相匹配的壓力梯度、並把激光器低壓工作介質和外界大氣相隔離的「氣幕」 ,從而保證高能激光器的正常工作。The baroclinic component of the real atmospheric flow fields played a dominant role during the torrential rain. with the development of the rainstorm, the barotropic component of the real atmospheric flow fields decreased, along with the baroclinic component increasing
暴雨前後,實際大氣流場的斜壓性一直佔主導地位,並且隨著暴雨的發展,實際大氣流場的正壓性減弱而斜壓性進一步增強。At last, some theory analysis on wave quasi - resonance in forced and dissipative barotropic atmosphere is analysed in theoretics, which further proved the results of diagnosis and numerical experiments is understated
最後,對強迫耗散正壓大氣波動準共振進行了理論分析,進一步證實了本文的診斷分析和數值試驗結果。分享友人