holdup 中文意思是什麼

holdup 解釋
持率
  1. So anew type of measurement and instrumentation is badly needed and developed which is suitable for non - centralized and stationary measurement based on this idea, this study take the new type of oilavater two - phase flow measurement and instrumentation development as the basic goal, cany out some theoretic exploration of measurement in order to improve oil / water two - phase flow well logging method and technique, and try to accomplish bom holdup and total flow rate measurement with one equipment simultaneously so as to push forward development of oilavater two - phase flow well logging

    本文正是基於這一思想，以開發新的油水兩相流測試儀器為目標，進行先期的測量理論探索，試圖從原理上改進油水兩相流測井方法和工藝，實現利用同種電學敏感原理同時完成持率和總流量的測量，推動油水兩相流測井技術的發展。
  2. The pressure at every point along the pipeline, the gas - liquid phase flow rate and the law of the liquid holdup in the pipeline chang ing with time in the process of gas storage and supply at the time of peak shaving are simulatively calculated, and based on this, the problem on peak shaving is thoroughly analyzed by combining with the existing pinghu - shanghai gas pipeline in china

    模擬計算了調峰過程中管道儲氣和供氣過程沿線各點的壓力、氣液相流速和管內持液率隨時間的變化規律，據此結合我國已建成現有的平湖一上海的天然氣管線，對調峰問題作了深入地分析。
  3. The hydrodynamic parameters and mass transfer coefficient are studied in the internal loop airlift bioreactor used in treating wastewater. the hydrodynamic parameters consist of gas holdup, liquid velocity and axial dispersion coefficient

    本文從流體動力學和傳質動力學兩個方面考察了用氣升式內環流生物反應器應用於廢水處理的性能。
  4. The wavelet multi - analysis is adopted to further understand the microstructure of solids holdup fluctuation, the vivid fingermark images show that it is a fractal and dissipative structure. the low and frequency signals reflect the dilute phase fluctuation behavior and dense phase ( cluster ) fluctuation behavior, respectively. to deep understand the multi - scales characteristic of gas - solids circulating fluidization, the wp decompose methods for obtaining the eigenvalue of gas - solid fluidized bed has been developed. the results show that eigenvalues of different scales are effective for identification of non - uniform and dynamic structure of gas - solid fluidized bed

    小波多分辨分析法得到指紋圖形象地揭示了顆粒濃度脈動的自相似、分叉等具有混沌特徵的微觀結構；小波分解后信號中的低頻和高頻成分分別代表了稀相和密相的脈動行為，小波包分解提取能量特徵值的方法能夠揭示氣固的多尺度特性，不同尺度上的能量特徵值四川大學碩十論文反映了氣固循環流化系統中存在的非均勻動態時空結構。
  5. Another measure of holdup is the k factor used by bankoff in connection with the bubble flow pattern in gas-liquid flow.

    滯留現象的另一個度量是Bankoff在氣-液流動的泡狀流型中所採用的因數K。
  6. It is demonstrated that the use of the perforated plate affords a high level of gas holdup, especially at higher superficial gas velocities, and nearly uniform distributions of the solid within the column

    結果表明，多孔板分佈器加入后淤漿床內的氣含率較高，這種差異在較大表觀氣速下尤為明顯，同時床內的流動變得均勻。
  7. If the average slip velocity is zero, there is no holdup of one phase relative to the other.

    如果平均滑移速度為0，也就沒有一相對另一相的滯留。
  8. This theoretic model employs the basic idea of correlation measurement, achieve the density wave speed by the correlation of the signals of upper and lower sensors, and get the total flow rate and water cut through the theoretic relationship of density wave speed and total flow rate as well as holdup with the help of drift flux model so as to accomplish the oil / water two - phase flow measurement at last, using the limited available experiment data, the theoretic model has been simplified into an applicable linear alternative which is suitable to homogeneous oil / water two - phase flow measurement to accomplish the oil / water two - phase flow measurement using the density wave phenomena is of highly theoretically valuable for density wave theory research as well as oilavater two - phase flow measurement research. to develop new type oil / water two - phase flow instrumentation based on this theoretic measurement method will be very applicable and promising

    在此基礎上，針對穩態密度波理論提出了基於密度波理論的油水兩相流測量理論模型，該模型以密度波傳播理論作為基礎，通過上下游傳感器信號相關獲得密度波傳播速度，利用密度波傳播速度與總流量以及持相率的理論關系結合漂移模型來求解總流量和含相率，實現油水兩相流的測量，在理論分析的基礎上，在實驗資料有限的條件下，對基於密度波理論的油水兩相流測量理論模型作了極限的簡化，提出了本文油水兩相流測量理論方法應用在測量均勻油水兩相流中的實用線性模型。
  9. Three phase flow water holdup for data inversion by using reservoir saturation tool

    用油藏飽和度儀資料反演求解三相流動持率研究
  10. The measurement of oil / water two - phase flow is primarily accomplished by the combination of total flow rate and holdup measurement, and at present, the rotator flowmeter is used to measure the total flow rate. since the rotator flowmeter has movable parts, which makes its responsibility behave nonlinearly under poor environment of me under hole whose fluids have very complex and changeful characteristics and affects the measurement precision. what ' s more, the widely used centralized measurement instrumentation meets problems in oil wells characterized with high production or high water cuts

    通常油水兩相流測量主要是通過總流量和持率的測量組合來完成的，目前在總流量的測量中主要使用的是渦輪流量計，由於渦輪流量計具有可動部件使其在流體特性復雜多變的惡劣井條件下的響應呈非線性變化規律，影響測量精度，此外，普遍採用的集流型測試儀器在高產井及含水率高的油井中使用也遇到困難，為此，一種新型的適合非集流型點測的測試方法和測試儀器亟待發展和推廣。
  11. Standard guide for nondestructive assay of special nuclear material holdup using gamma - ray spectroscopic methods

    用射線光譜法對特殊核物質含量的無損分析的標準指南
  12. The gang commit three armed holdup on the same day

    犯罪團伙在同一天進行了三次武裝搶劫。
  13. Installation and classification of burglar and holdup alarm systems

    防盜報警系統的安裝和分類
  14. The same gun that killed katherine markum was used in a liquor - store holdup in 1 984

    殺害凱瑟琳馬克姆的那支槍與1984年那個酒類專賣店搶劫案是同一支
  15. A solid - liquid fluidized bed has been designed and installed, which will be used in the heat exchanging and descale field. the experimental study for distributor design was carried out and the particles distribution in the tubes of the solid - liquid fluidized bed under different operating conditions was studied by using the ccd measure system. experimental results show that heterogeneous pores distributor which was arranged in the inlet chamber of the solid - liquid fluidized bed can improve the nonuniform distribution of particles in the pipe bundle under high flow rate. the nonuniform decreases by decreasing the mount of pore, but the solid holdup decreases too. the particles distribution is influenced by the position of the heterogeneous pores distributor

    實驗結果表明：在液固循環流化床進口段安裝可調節高度的變孔徑分佈板，能在較高的流速下，較好的改善固體顆粒在管束中的不均勻分佈；開孔率越小固體顆粒在管束中的分佈越均勻，但管束中粒子的平均固含率也越小；分佈板的安裝高度對顆粒的分佈有很大的影響，在實驗范圍內分佈板的安裝距離管束入口處越遠，顆粒在管束中的分佈越均勻。
  16. There was a holdup in the bank this afternoon, but one of the holdup men was arrested on the spot

    今天下午發生了銀行劫案，但其中一名劫匪當場被捕
  17. Holdup alarm units and systems

    防盜報警裝置和系統
  18. Another measure of holdup is the k factor used by bankoff in connection with the bubble flow pattern in gas - liquid flow

    滯留現象的另一個度量是bankoff在氣-液流動的泡狀流型中所採用的因數k 。
  19. In the realm of criminals, the crook with the gold - plated pen or the knowledge how to get inside a computer system outranks by far bank robbers and holdup men for money stolen

    在罪犯世界里，靠一支鍍金鋼筆走天涯或懂得如何潛進別人電腦系統里去的騙子，以攫取到的金額而言，絕對遠勝打劫銀行或攔途截劫的匪徒。
  20. And when the solid concentration ( cs ) is 0. 75 %, the gas holdup in riser reaches the highest value. 2

    固含率在0 . 75左右時上升區氣含率最高； 2
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