絕對流速 的英文怎麼說
中文拼音 [juéduìliúsù]
絕對流速
英文
velocity, absolute- 絕 : Ⅰ動詞(斷絕) cut off; sever Ⅱ形容詞1 (完全沒有了; 窮盡; 凈盡) exhausted; used up; finished 2 ...
- 對 : Ⅰ動詞1 (回答) answer; reply 2 (對待; 對付) treat; cope with; counter 3 (朝; 向; 面對) be tr...
- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 速 : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
- 絕對 : absolute
- 流速 : [機械工程] velocity of flow; strength; [水文] current velocity; current speed; flow rate流速管 pi...
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With hutchison telecom s capability of providing the territory s currently fastest 2. 5g mobile data services at transmission speeds of up to 64kbps, we have a distinct edge in providing very soon more cutting - edge mobile commerce services, riding on hongkong post s mobile e - cert system initially on pda and progressively on other mobile devices
和記電訊憑著推出全城最快64kbps傳輸速度的2 . 5g分組數據流動通訊服務,並配合香港郵政流動電子核證系統,在提供領先的流動商貿服務將有著絕對的優勢。In the thesis, the insulation recovery properties of spark gap switch are investigated through theoretic analyses and numerical calculation, and the influence of gas flow on the insulation recovery of switch is studied experimentally
本文從理論分析、數值計算等方面研究了氣體火花開關的絕緣恢復特性,實驗研究了氣流對火花開關恢復速度的影響,其研究結果為火花開關的多脈沖運行奠定了堅實理論基礎。Test results indicated : with the hoist of altitude, the increase of ice amount and the rise of pollutant, the average flashover voltage reduced. the character exponent generally depends on the insulator profile, ice amount, ice state and pollution severity etc. by means of a high - speed camera, a data acquisition system and high voltage test facilities, a series of the flashover processes on ice surfaces were record. the experimental results form this study and the subsequent theoretical analyses suggested : the thermal ionization of the air in front of an arc root resulted in arc movement ; the electrostatic force had an auxiliary effect of impelling arc propagation ; the electrical
通過對攝像機、數據採集系統及高壓試驗裝置記錄覆冰絕緣子表面閃絡電弧的發展過程的試驗結果進行理論分析得出:弧根周圍空氣的熱電離導致了電弧的發展,靜電場力對電弧的發展起到了加速作用,電擊穿僅發生在閃絡最終的跳躍階段;通過測量閃絡過程中的放電電壓、泄漏電流、閃絡時間、覆冰水電導率、電弧長度及電弧半徑等參數,得到了不同階段電弧(電弧起弧階段、電弧發展階段及完全閃絡)的發展速度、臨界電弧長度均隨覆冰水電導率的增加而減小。To search for high - velocity molecular emission toward massive star formation regions, and to study the connections between h2o masers, iras objects and outflow properties, we carried out a co observation for a h2o maser sample. we found that most of the objects have excess high velocity emission produced by outflows ; we find a significant correlation between co line full widths and iras luminosities. the widths are proportional to the iras luminosities
通過在大質量恆星形成區搜尋高速分子輻射,並且研究它們與星際h _ 2o脈澤源和所聯系的紅外源之間的關系,我們發現絕大多數源都存在著氣體的高速運動並且它們是由分子外流產生的;我們同時發現在co分子的譜線全寬和所對應源的紅外光度之間存在很好的相關性,線寬隨紅外光度增加而變大。In boundary treatment, the model turns into generally adds coarseness boundary made of specially complex many coarseness body in the physical model experiment as the coarseness body highly and discharges the density to add the coarseness spot as the main characteristic whole, both to avoid the location within the body of this complex mathematical simulation problems, and could realize this model after to simulate the apron that adds the coarseness namely adds the coarseness section downriver speed of flow to the downriver current of water base speed of flow influence in to hang upward
該模型在邊界處理時,將物理模型試驗中由特別復雜的多個加糙體組成的加糙邊界概化成以糙體高度為主要特徵的整個加糙部位,既避開了對加糙體內部進行極其復雜數學模擬的這一難題,又能實現模擬海漫加糙段下游水流流速在垂向上的分佈變化這一主要目的。在獲得基本的入流流速分佈、初始水位及加糙體的絕對高度和加糙段長度的情況下,能迅速模擬出加糙段下游各個斷面在垂向上的流速分佈情況。The influence of insulation effect and resistance property of the cryogenic system on the temperature rise was discussed, the formula of flow temperature rise and optimal flow rate was deduced, the relationship among the flow rate, pipe diameter and flow temperature rise was analyzed and the way to determine flow rate and pipe diameter was introduced
摘要論述了低溫系統絕熱性能和流阻特性對液流溫度的影響,推導了液流溫升及最優流速公式,分析了流速和管徑與液流溫升的關系,提出了確定流速和管徑的方法。The reason to creates this kind of destruction to be very many, the main of them is that the apron partially has not been able fully to display it to eliminate energy affect so causes the ditch bed to wash out, forms flushes the pit, leading to the apron, to guard against flushes the trough and both banks slope protection destruction, for a long time, disappear power design of plunge basin and layout have been focused on disappear power. but not to give the enough value on uses the sea to inundate the section to disappear power and adjust speed to reduced downriver washes out
水閘閘下沖刷破壞的部位絕大多數發生在消力池下的海漫和防沖槽處,造成這種破壞的原因很多,其中很大一部分是由於海漫部分未能充分發揮其消能作用而引起渠床沖刷,形成沖坑,導致海漫、防沖槽及兩岸護坡的破壞。一直以來,人們把消能的研究重點放在消力池的消能設計及平面布置上,而對海漫段消能及調整流速功能研究甚少,至於對海漫加糙水流運動建立數學模型,在國內外還很少見相關的論文資料。But after this time, money velocity decreases for more than 20 years. especially gdp / m _ ( 2 ), its decrease trend is unprecedented whether by its absolute value or its decrease speed
我國在改革開放以前貨幣流通速度長期保持在8左右,但是在改革開放以後貨幣流通速度出現了一路下滑的趨勢,尤其是gdp m _ 2 ,不但是下降的絕對量還是相對速度都是世界歷史上前所未有的。The finite element method ( fe '. i ) is adopted to analyze the effects of the numbers of coil turns, current intensity and current frequency upon the rate of joule heat generation in details. the thermo - radiation analytical countermeasures of various types are adopted to carry out the numerical analysis of the effects of the crucible with different shapes and sizes and the blind holes with different depths opened in the tops of crucibles as well as coil positions upon the thermal field distribution whereby solving the main problem of field the thermo - field design of the induction - heating sic crystal growth system. a new combination idea of the thermo - field design obtained by means of the united design of the thermo - insulator and blind holes has been presented
採用有限元分析方法對線圈匝數、電流強度、電流頻率等對焦耳熱產生速率的影響進行了詳細的分析討論;採用不同的熱輻射分析策略,對不同坩堝形狀、坩堝頂部開設不同深度的盲孔以及線圈的位置等對熱場分佈的影響進行了數值分析,解決了感應加熱碳化硅晶體生長系統熱場設計的主要問題,提出了通過絕熱層與盲孔的聯合設計獲得所需熱場設計的思路,給出了根據軸向溫度梯度的波動對線圈位置實行動態調節以控制熱場的理論依據。It can also determine the fault spot and reason. this technology has been used in some technological fields and proved efficient. it has promoted the revolution of maintance system and the historial protection is replaced by preventive maintenance. with this technology, we can improve the reliability of machine and decrease the maintance fee. recently, reserch has pick up a fervent pace in the area of fault diagnosis of electrical machines. the paper simply analyzes the fault reason of electrical machines, stressly describes and explores the methods of condition monitoring and fault diagnosis such as partial discharge, stator current, rotating speed, vibration etc. fault prognosis is now include diagnostic feature, reason, spot. prodigious improvement in signal processing hardware and software has made this possible. primarily, these techniques depend on locating specific harmonic components of the fault. these harmonic components are usually diffirent for diffirent types of faults. automated tools such as fuzzy logic based system is also simply presented in the paper
本文從絕緣結構的故障機理入手,以絕緣結構故障的典型特徵? ?局部放電為研究對象,重點討論局部放電的在線監測方法、適用場合併比較它們的優缺點;在分析籠型異步電機轉子斷條在線監測的定子電流監測方法后,根據其缺陷,本文探討了溫升不平衡法、希爾伯特變換數字濾波、小波包分析法的原理及優點;以電機軸承、氣隙偏心等故障為研究對象,通過對電機振動和轉速頻率的檢測,診斷電機的故障類型;本文的重點工作是將人工智慧技術中的模糊技術應用於電機的狀態監測和故障診斷中,力求使電機故障診斷更接近人工智慧化;最後,本文對電機狀態監測和故障診斷系統進行了硬體和軟體初步設計,為實現預測維修提供了有效的技術手段。The closed loop control mode including position feedback, velocity feedback and current feedback is adopted for the driver motor so that high precision and steady running can be realized. the closed loop control mode including velocity feedback and current feedback is adopted for the momentum balance motor so that fast and accurate trace can be realized
其中驅動伺服電機採用絕對位置光電編碼器作為位置反饋確保系統的精度要求,實現了位置、速度、電流三環控制,達到了伺服電機的高精度、穩速運行;平衡電機採用電流和速度雙閉環控制,實現平衡電機快速、精確的跟蹤。Larger changes were measured in the near wall region. the numerical simulating results of the gas - particle two - phase flow in duct show that the velocity difference of the gas and particle in the near - wall region would increase as the diameter of the particle enlarge
絕熱兩相流的數值模擬結果表明顆粒在壁面的跟隨性隨粒徑的增大而下降,近壁區saffman升力的存在對兩相流動的軸向速度影響不大,但對顆粒的濃度分佈有一定的影響。From there the antiprotons go into a " catching trap, " where most of their remaining energy is absorbed and radiated away by electrons swirling in a magnetic field, lowering them to a temperature of about 15 degrees above absolute zero and speeds of a few hundred feet per second
從那裡反質子進入一個「捕獲線圈, 」在一個磁場中它們中的大多數以能量被吸收而且以電子渦流輻射掉了,降低它們的溫度為絕對零度上大約15度且速度為每秒數百英尺。分享友人