排流試驗 的英文怎麼說
中文拼音 [bèiliúshìyàn]
排流試驗
英文
current drainage test-
In the first trial, combination of enzymatic digestion was used to prepare suspensions of spermatogenic cells from adult mouse testis, and then a modified discontinuous percoll gradient centrifugation method ( 15 %, 22 %, 30 %, 40 %, 50 %, 60 % ) was introduced to isolate spermatids from the cellular suspensions. the content of spermatids in each isolated fraction by percoll method was determined by morphology ( wright - giemsa stain ) and flow cytometry analysis, and the viability of spermatogenic cells was assessed by using eosin y exclusion test
在第一部分試驗中,首先利用連續3次組合酶消化成年小鼠睪丸制備睪丸細胞懸液,然後經6層非連續percoll梯度離心法( 15 、 22 、 30 、 40 、 50和60 )分離,通過形態學和流式細胞術鑒定南京醫科大學碩士學位論文各個percoll組分中精子細胞的含量,並以伊紅y排斥試驗測定細胞的存活率。The first meteor live firing trial is scheduled to take place in sweden before the end of 2005
流星』的首枚實彈發射試驗安排在瑞典於2005年末進行。The analysis show that the project target of detaining the coarse and discharging the fine can be got with the related measures, such as placement of the warping sluice on the concave bank of a bending reach ; arrangement of the overflow weir on a bending reach and reasonable zoning and scientific control of the desilting channels etc
分析表明,採用將放淤閘布設在彎道上段的凹岸、彎道設置溢流堰、淤沙條渠的合理分區和科學調度等措施,可以實現試驗工程淤粗排細的目標。Hydraulic fluid power - test code for determination of airborne noise levels - part 3 : pumps - method using a parallelepiped microphone array
液壓流體動力.氣載噪聲級測定的試驗規程.第3部分:泵.採用平行六面體麥克風排列法So as the enter point of the stream, the income of the reservoir, the time of the flood peak lasted, the quantity of sandiness income and the strobe of the darn. we must do some work to forecast and watch the different density stream. by experiments, we made out that it is impo rtant for us to reduce the water lever in work of the river belongs lots of sandiness
從異重流試驗看,在正常運用下,水庫產生泥沙異重流的機率較大,能否運動到壩前排出庫外,還要看異重流潛入點位置、入庫流量、洪峰歷時、入庫含沙量、水庫閘門運用等因素,需要做好異重流預報監測工作。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。Testing of semiconductor materials ; measurement of the resistivity of silicon or germanium single crystals by means of the four probe direct current method with collinear array
半導體材料的試驗.用探針直線排列的四探針直流法測With regard to its field drilling applications in the geologically loose sandy pebble layers, kl vegetable - gum drilling fluid showed itself with excellent rheological behaviours in its abilities of lubrication, lost circulation, suspension and removal of debris, anti - shear shinning, and high coring rates, which satisfactorily meet the demands of geological boring in the dam foundation of huangjin ping hydroelectrical power plant
通過在黃金坪水電站壩基深厚砂卵石覆蓋層鉆探取芯的現場試驗,證明了kl植物膠沖洗液具有優良的流變特性,潤滑、堵漏、懸浮排除巖屑和抗剪切稀釋能力顯著,可實現高取芯率,能很好的滿足地質鉆探對取芯質量的要求。Coal - water slurry is a new type of clean fuel as a replacement for oil. this paper introduces the tests of maoming no. 2 oil - fired 220 t / h utility boiler being retrofitted to fire coal - water slurry, including slagging tendency, heat transfer performances and pollutant emissions. firstly the k - ? two - equation turbulence model is used in numerical simulation for the side - air burner, compared with the practical measures and tests, good accordance achives
水煤漿是一種低污染、高效率、流動性強的代油新型清潔燃料,本文針對廣東省茂名熱電廠2 #油爐改燒水煤漿示範工程,對鍋爐改造后的結渣特性、爐內傳熱特性和污染物的排放特性進行了試驗研究。After thermodynamic calculation on several operation conditions of the furnace, cold - state flow and resistance mensuration, the combustion of the tubular - furnace hearth was changed into swirl and addition of radiate cylinder and oxygen content detection minish 1. 25 surplus air to less than 1. 15, improving the combustion condition and convection and radiate heat transfer efficacy, resuling in reducing the waste - gas temperature 45, decreasing exhaust gas loss, and saving fuel by 6 %
摘要通過對加熱爐幾種工況進行熱力計算、冷態試驗的流場分佈及阻力測定和熱態試驗的爐膛溫度場分佈及管壁溫度等參數的測定,確定將管式加熱爐爐膛內直流燃燒改為旋流場燃燒和增加輻射筒,增設煙氣含氧量分析,可以將燃燒的過剩空氣系數從1 . 35減小到1 . 15以下,極好地改善爐膛內的燃燒狀況和對流輻射傳熱效果,從而降低排煙溫度45 ,減少加熱爐排煙損失,節約了煤氣量6 %以上。Gully erosion, which is universal on original lands, but also the special forms, for example, hole erosion gravel erosion debris slide and debris flow, which is unusual in loess area, ( 2 ) based on a long - term fixed point experiments in proving ground of the south stackpile, the soil erosion factors have been researched quantitatively, the runoff and erosion affected factors have been made sure and the experiential models of producing water and soil have been taken in newly - constructed stage, early stage and later stage of reclamation
確定南排土場原地貌的水蝕模數為3700 4400t km ~ 2 ? a ;在排土場新造地貌上,擊濺、面蝕、細溝侵蝕、淺溝侵蝕、沉陷侵蝕、砂礫化面蝕、土砂瀉溜和坡面泥石流等水土流失形式出現頻率和發生程度都明顯強于原地貌。 ( 2 )以南排土場徑流試驗場長期的定位觀測為基礎,對排土場未復墾時期、復墾初期、復墾後期的土壤水蝕影響因子進行定量研究,確定了徑流和土壤水蝕的主要影響因子及其臨界值,建立了產流產沙的經驗模型。Then the thermal visualizations of jet impingement cooling with single or double row holes inside semi - enclosed ribbed channel are measured by using infrared camera and the effects of flow and geometry parameters on convective heat coefficients are obtained. the results show that : the impingement cooling effectiveness of ribbed surface is affected greatly by the jet - to - surface spacing, and the best effectiveness is achieved under the jet - to - surface spacing equals to 1. the correlation formulas of impingement heat transfer characteristics to the parameters are finally concluded and in good agree with the experiment data
最後,對單排、雙排沖擊孔試驗板在半封閉通道展開了流量系數的研究,在變化各種幾何因素及流動因素的情況下由實驗得出了沖擊孔流量系數值,討論並分析了各種因素對流量系數的影響程度,建立了沖擊孔流量系數的準則關系式,與實驗結果對比表明:該準則關系式與實驗實測數據吻合較好,精度較高,有較高的工程應用價值。Standard test method for measuring pavement texture drainage using an outflow meter
用出流量計測量鋪面結構排水量的標準試驗方法In order to investigate the unsteady flow frequency domain performances of an axial flow compressor at different mass flow, rotating speed and blade row spacing, plus inlet flow distortion, and considering aerodynamic characteristics and stability of the compressor, the low speed research compressor ( lsc ) at college of energy and power in nuaa is used to carry out the experiment studies. a large amount of test data has been gained through dynamic pressure transducers embedded in the stator blades at the tip, middle and hub section, then fast fourier transform algorithm ( fft ) is applied to calculate the frequency data
為探討軸流壓氣機在工作流量、工作轉速及動?靜葉排軸向間距變化時的葉片排流場非定常頻譜特性變化規律,並耦合進氣畸變的影響,同時與壓氣機氣動性能和氣動穩定性相關聯,作者利用南京航空航天大學能源與動力學院的低速大尺寸軸流壓氣機( lsc )試驗器,採取在靜子葉片表面埋入動態壓力傳感器的實驗方法,對葉尖、葉中和葉根三個截面的動態壓力進行了測量,獲得了大量的可靠的實驗數據。In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source
摘要基於李家峽水電站雙排機組振動的現場試驗研究,並且針對傳統頻譜分析方法傅立葉變換( fft )對于非平穩信號已力不從心這一缺陷,利用小波分析方法在時域和頻域上同時具有良好的局部化性質,通過對開停機這一典型非平穩過程信號進行小波及小波包分析,將其分解到不同頻帶內,獲取微弱信息和提取優勢頻率,並對其作振源分析,得出開停機初始時刻因水流不穩均出現強烈的振動現象,且低頻段信號能量最大,開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。The phenomena can be observed in the tests low seepage pressures can easily form passageways behind the waterproof layer if there is no drainage layer or the drainage layer is blocked in the single - shell test slab ; the waterproof layer can resist higher seepage pressure if there is no drainage layer or the drainage layer is blocked in the double - shell test slab ; the seepage water can be controlled and drained away in the drainage layer by the water proof layer only if there is unblocked drainage layer behind it in the double - shell test slab
由試驗可見,在單層試驗板中沒有排水層或排水層不通暢時,較低的水壓就能在防水膜后形成滲流通路;在雙層試驗板中沒有排水層或排水層不通暢時,防水膜能抵抗一定程度的滲漏水壓;只有在雙層試驗板中的排水層暢通時,防水膜才能有效地將滲漏水控制在排水層中排走。In this paper combustion performances of the single - head annular combustor with different swirler cups are investigated by experiment and numerical simulation. under different fuel - air ratios, profiles of exit temperature 、 combustion efficiency 、 lean blowout limit and pollutant emission are measured
在相同的雙級旋流器情況下,試驗分析不同油氣比對單頭部環形燃燒室的出口溫度分佈、燃燒效率、貧油熄火油氣比以及污染物( co _ 2 、 co和nox )排放等燃燒性能的影響規律。An experimental study is carried out on the effect of following factors on the combustion performance of a vehicle fuel heater : geometric parameters ( the number, diameter, distribution and direction of combustion chamber intake holes ) and intake and exhaust pressures
摘要對車用燃油加熱器燃燒室進氣孔徑(流通面積) 、孔的分佈、孔的方向等幾何參數和進排氣壓力對加熱器燃燒性能的影響進行了試驗研究。Heavy duty engines - measurement of gaseous emissions from raw exhaust gas and of particulate emissions using partial flow dilution systems under transient test conditions
重型機車.未處理排氣的氣體排放測量和瞬變試驗條件下用部分流體稀釋系統測量粒子排放High - voltage fuses. part 3 : determination of short - circuit power factor for testing current - limiting fuses and expulsion and similar fuses
高壓熔斷器.第3部分:試驗限流熔斷器和排氣式及類似型式熔斷器的短路功率因數的測定分享友人