wt-a 中文意思是什麼

wt-a 解釋

  • wt : 壁的厚度
  • a : an 用在以母音音素開始的詞前〉 indefinite art 1 〈普通可數名詞第一次提到時，冠以不定冠詞主要表示類...
  1. Equal channel angular processing of the pearlitic steel ( 0. 65 wt. % c ) was successfully carried out at 650 with route c in this study, obtaining a total equivalent true strain ~ 5. the microstructure evolution of pearlitic steel in ecap was investigated by means of transmission electron microscope and scanning electron microscope. the main results are as the following : 1

    本研究成功地實現了c方式650珠光體鋼65mnecap變形，累積等效真應變達到5 。並用透射電鏡、掃描電鏡研究了珠光體組織的演變特點和滲碳體的變形。主要結果如下： 1
  2. In performing ecap, a material is subjected to intense plastic straining by pressing a sample repeatedly through a die containing two channels, with equal cross - sections, intersecting at an angle. equal channel angular processing of the medium carbon steel ( 0. 45 wt. %

    Ecap變形是使試樣通過橫截面相等並成一定交角的兩通道的模具中而產生強烈的塑性變形的一種變形方法。最近人們運用ecap變形方法成功地使低碳鋼及珠光體鋼組織超細化，關于這方面的研究已引起了人們的廣泛關注。
  3. The residence time of distribution and froth height in the downcomer were measured. the tracer used was 10 wt % sodium chloride solution. the residence time of distribution curves in a downcomer were measured by using the tracer technique

    所用示蹤劑是10 （質量百分比）的nacl溶液， rtd曲線採用了脈沖響應技術來測量，用計算機實時採集系統對數據進行採集。
  4. W factere w the work of strengthen the security of the enterprise information mp to be the highest priority, the whcle enthely analyses all ldnds of security problems tha a intemal netwrk of stock compan may risk thtough rystematic view. it gives out sollltions fbr the crst systffo wt on wtg, operating systeln, taling system, tu1ti - vinrs, beckalp, secwity edce and physical settings

    在此基礎上，對公司現有系統作出了系統化的安全方案，包括應用防火墻技術、 vlav技術和windows2000 ）系統的安全機製作出的網路和系統平臺，防病毒和系統備份方案，根據公司中心機房建設的規模，以及中心機房所在地的現場條件，分別就空調系統、后備電源系統、防雷擊和系統監控給出實施方案。
  5. Next analyzed were the characteristics of natural gas pipeline transmission ; cost, ratemaking principle, method of acquiring the pipeline transmission fee, constitution, calculate, management and control after that, wt ; compared service cost methods with economic evaluation methods and the one - part pricing method with the two - part pricing method. later on was introduced the regulate coefficient of pipeline transmission fee structure, established the modificatory two - part pricing method, and found out a natural gas pipeline transmission pricing method that is fit for china ' s current situation. finally, we validated the rationality and applicability of this metho j by the demonstrational analysis on the natural gas pipeline transmission price of " the gas transmission from west to east " pipeline this paper ' s research fundamental is : the fundamental of natural gas pipeline transmission pricing should reflect the characteristics of natural gas pipeline transmission

    本文首先論述了自然壟斷行業的價格理論，然後分析了天然氣管輸的特點、定價原則及管輸費的收取方式、成本、構成、計算及其管理與調控；在此基礎上比較了中外天然氣管輸定價的服務成本法與經濟評價法，一部制定價法與兩部制定價法等；針對目前我國天然氣管道運價的制定現狀，本文深入研究了國際通用的天然氣管輸定價方法，引入「管輸費結構調整系數」的指標，建立修正的兩部制定價方法，找出了一套適合於我國當前國情的恰當的天然氣管輸定價方法，並通過「西氣東輸」管線加以實證分析，驗證了方法的合理性和適用性。
  6. 3. use the boasting dates of every bo, we atup the dea rnodel, such as c ' r and c : gs :. w wt is m as a theis, and it ' s relative efficiency is evalwt by the m, we ahalysis bo taal effiwt and scale effeency a clear ditw is given bo the dea effiho dmus nd the no dea effich we also can for m insghthe - - boon with the bokgroun

    構造具有非阿基米德無窮小量的dea模型c2r和c2gs2 ，對調整前後農業產業系統的綜合生產能力和生產效率進行評價，體現了不同調整方案的結構優化效應，並對各方案進行規模效益和投入冗餘率、產出不足率分析：運用投影定理構造「虛擬」決策單元，對方案進行修正和改進。
  7. As the dmso concentration ( wt / wt ) in the second coagulation bam increases, the water flux and the clearance rates of urea and creatintine first decrease men keep in a relatively low level and increase at last

    隨著第二凝固浴dmso濃度（ wt / wt ）的增加，水通量和肌肝、尿素去除率均是先下降，然後保持在較低的水平，最後又呈上升的趨勢。
  8. The chitosan / glycerol membrane has best properties with 8 % ( wt ) glycerol and fixed at 70 ? for 2 hours in a mixed fixation agent composed of ethanol, glycerol and sodium hydroxide

    通過將殼聚糖和明膠共混，充分利用兩者的優點，達到生理功能的協同增效及物化性能的改善。
  9. At last the material and the craftwork are attempted to repair a pipe. the results show that : firstly, all of hdpe / elastomer, xlpe, hdpe / dynamic vulcanization elastomer can obviously improve the shape recovery properties of hdpe ; the shape recovery properties of hdpe / nr is the best among the three kinds of blended system hdpe / epdlvl hdpe / nr and hdpe / nbr, but the mechanical properties and flow behavior will decrease in a certain degree. secondly, hdpe and hdpe ( 2480 ) / nbr ( 15 % ) have the better anticorrosion to hot crude oil, and the anticorrosion of ldpe is the worst ; thirdly, the content of elastomer should be about 15 wt % if the blended system is used in the intercrossing method in repairing old pipes

    結果表明： （ 1 ） hdpe彈性體、 xlpe 、 hdpe動態硫化彈性體能夠顯著改善hdpe的形狀回復能力；在hdpe epdm 、 hdpe nr和hdpe nbr三種共混體系中， hdpe nr的形狀回復能力最好， hdpe彈性體共混體系的力學性能和流動性能隨彈性體含量增加而降低； （ 2 ） ldpe耐80原油腐蝕性能很差， hdpe耐80原油腐蝕性能良好；共混體系中hdpe - 2480 nbr （ 15 ）耐80原油腐蝕性能良好； （ 3 ）作為穿插法修復舊管道的襯管材料，共混體系中彈性體含量以15為宜。
  10. The hydrodynamics of slurry bubble columns with and without a perforated plate distributor have been investigated with a coal solid concentration of 29 % ( wt ) under a continuous operation mode for both liquid and solid

    摘要對于有、無進料口多孔板分佈器兩種結構下淤漿床中的流動特性進行了考察。
  11. Since l99l, the intemaional society has been wt a movement of corporate governane, which will become a standard of founding a corporation in the 2lst centui ' y for the enterprise reform in china, to establish the effectiye corporate govemance is the utmost urgency the traditional contempoop corporation takes separaion of ownership and management right as it characeristic, which is the center of development of corporae govemance theory but with the condng of intelligence econondc agc, property system wll change, which surely act on corporate govemanc < and demand the corresponding reform

    但隨著知識經濟時代的到來，將使財產體制經歷一次新的變革。這種新的財產關系帶來了所有權、經營管理權的變革，必然觸動公司的治理結構，並要求其產生相應的變革。公司治理的本質是為了實現企業價值最大化，而治理結構僅是一種制度安排，是企業所有權的安排。
  12. In order to study the effect of weak noise on the sound signal extraction of mouse ( mus musculus km ) inferior collicular ( ic ) neurons from environment, we examined the change in frequency tuning of neuron induced by a weak noise relative to 5 db below minimum threshold ( remt - 5 db ) of tone. 12 healthy adult mice ( 20 - 25 g, b. wt. )

    本實驗旨在探討弱噪聲對小鼠（ musmusculuskm ）中腦下丘（ inferiorcolliculusic ）神經元聲信號提取的影響及其神經機制，我們選用相當于純音閾下5db的白噪聲（ whitenoise ） ，比較加入噪聲前後神經元頻率調諧曲線的變化和注射-氨基丁酸（ - aminobutyricacid ， gaba ）能受體拮抗劑荷包牡丹堿（ bicuculline ， bic ）后對該變化的影響。
  13. Abstract : the synthesis, adsorptive properties and some other mechanical properties of a kind of high water - adsorbing fiber were studied, paper made from this high water - adsorbing fiber beaten with 80 % ( wt ) cotton, demonstrated that the fiber had rap id adsorption, high adsorptive capacity and holding capacity for all of distilled water, main - water and man - made urea, and had suitable mechanical properties to be used to make high water - adsorbing paper

    文摘:本文報道了一種高吸水纖維的合成、吸水性能及其部分物理機械性能，並利用這種高吸水纖維與純棉纖維按1 ： 4的比例進行混合打槳而製成一種高吸水紙，對這種吸水紙也進行了吸水性能及部分機械性能的測定，結果表明所合成的高吸水纖維對蒸餾水，自來水及人工尿液的吸附速度快，吸收量高，並且可在一定的壓力下保持較高的吸水量，還可以與棉纖維混合成紙。
  14. The paper also studies fast arithmetic and programming of discrete time quadrature wt and wpt and takes a deep look into their additional applications in motor testing, including denoising, filtering and so on. starting from basic theory of time - frequency analysis and wavelet analysis of asymptotic signals, this paper investigates several if law extraction methods and presents an especially effective one using wavelet ridge

    論文從時頻分析的基本理論出發，在漸進信號小波分析的基礎上，研究了漸進信號小波變換的漸進估計方法，提出了利用小波脊線來提取信號頻率隨時間連續變化規律（即瞬時頻率）的方法。
  15. The chinese government has decide d to lift restrictions on the aspects of quantity, region, ownership ratio, as well as t he company formation of the foreign capital retail trade within 3 - 5 years from wt o ' s entry, as a result, domestic retail trade will definitely face very big challenge

    在中國政府決定入世后的3 - - 5年內，逐步取消外資零售業在數量、區域、股權比例、企業形態上的限制的情況下，目前國內整體落後的零售業面臨的挑戰與沖擊將是十分巨大的。
  16. After interfacial polymerization, the module was filled with a 10 % ( wt. % ) aqueous trimethylamine solution and kept for 24 hours to convert the chloromethylated groups into cationic quaternary ammonium groups

    當界面聚合反應完成後，將膜浸入濃度為10的三甲胺溶液鄭州大學碩士學位論文中，通過化學修飾將其氯甲基基團轉化成陽離子季胺鹽基團。
  17. The addition of aluminium powders induced cement mortar to produce a mount of pore, the existing of pore could block path of through pore, so increased cement mortar impermeability. the experiments results revealed that appropriate addition amount of aluminium powders in cement mortar was 0. 004 - 0. 005 wt %

    氣泡的引入可以阻斷水泥石中的貫通孔的通路，從而增加其抗滲性能，通過試驗研究，鋁粉在水泥砂漿中的摻量以（ 0 . 004 0 . 005 ）為宜。
  18. The authour investigate the dosing conditions and effect of the pac to the huanghe water - source, which includes the following four parts : the selection of the pac ; the confirmation of dosing scheme and effect of the pac ; the research of application of potassium permanganate in combination with pac ; the research of the pac ' s modification and the modified effectiveness. the experiment is mainly carried out on the pilot system in the jieyuan water plan of tianjin. the results of the reseach include the following : l ) the pac from zunhua plant is selected as the better carbon for the source water of tianjin through the experiment ; 2 ) through the pilot experiment we conclude that the pac ' s best adding point is the mixing tank and the better dose is 10mg / l, on which the codmn of filtered water can be decreased to 40 % and the effluent have no problem of odour and color ; 3the adsorbing experiment show that pac mainly adsorb the organic matters which molecular wt., distribution between 500 and 3000, and can adsorb organic matters whose molecular wt., distribution are bigger than 6000 if the dose of it is adequent ; 4 ) pac together with potassium permanganate can remove the organic matter more effectively than each of them alone, and reduce the rising trend of turbidity of the flotation ' s effluent due to adding pac ; 5 ) the thesis made a research on the surface properties and the adsorbing capability of the modified carbon by oxidizer : the modified carbon with 20 % h2o2 can remove more organic pollutants than the untreated one by 12 % when we add a higher dose of coagulant ; 6 ) the modification of reduction and loading metal ions are also sttldied, and drow the following conclusions : the modified carbon with 5 % ammonia can enhance the organic matter ' s removal effectiveness by 10 % to the tianjin source water than the untreated one, and the modified one with loading metal ion remove the organic matters from the tianjin source water better ( 8 % ) than the untreated one due to the strong affinity betwween the humic acid and copper ion

    本文的實驗主要是在天津芥園水廠的中試系統上完成的，論文的成果和結論主要包括： 1 ）通過靜態實驗選定河北遵化活性炭廠生產的煤質炭為適合天津原水的炭種； 2 ）中試實驗確定粉末活性炭的較佳投加點為混合池投加，較佳投加量為10mg l ，此時可使濾后水的cod _ （ mn ）降低40 ，且可較好地控制濾后水的嗅味和色度； 3 ）初步確定粉末活性炭對原水中有機物的吸附主要集中在分子量在500 - 3000范圍內，投量增大時可吸附部分分子量大於6000的有機物4 ）中試實驗表明：粉末活性炭與高錳酸鉀聯用可取得較兩者單獨應用時對有機物更好的去除效果，且對因投加粉末活性炭而造成的氣浮出水濁度升高有一定的改善作用； 5 ）研究並初步確定氧化改性對粉末活性炭表面性質和有機物的去除效果的影響：粉末活性炭的氧化改性會使其表面的酸性官能團大量增強，表面極性增加；經20的過氧化氫改性的活性炭在增大混凝劑投加量（ fecl _ 3投量為15mg l ）時對有機物的總體去除效果較原活性炭提高12 ， 1次氯酸鈉改性活性炭對有機物的去除效果較原活性炭提高6 ； 6 ）研究並初步確定還原改性、負載金屬離子對原水中有機物的去除效果的影響：經5氨水改性的活性炭可提高天津源水中有機物的去除率達到10 ；負載銅離子后的活性炭可提高對腐殖酸類物質的去除能力，一般可提高8左右。
  19. Besides, it was found that compared with cta +, the confined geometry improves the thermal stabilization of methylene chains about 20 in the case of the gallery height less than 9. 1 a and surfactant content less than 24. 7 wt %, while the onset temperature of degradation reduces about 25 at high gallery heights and surfactant loadings

    較小的受限空間可提高烷基鏈降解溫度20 。隨著層間高度和插層物含量增大，起始降解溫度下降25 。有機蒙脫土的熱失重微分曲線呈多峰，與層間烷基鏈密度分佈呈多層堆積有關。
  20. The fault diagnosis based on wavelet transform ( wt ) is studied. according to the theory of the signal singularity detection based on wt, a fault diagnosis method based the b - spiine wavelet is given, and the good result is obtained in the simulation experiment

    基於小波變換的故障診斷?根據小波變換的信號奇異性檢測理論，給出了一種基於b樣條小波的故障診斷演算法，並對其進行了計算機模擬，結果表明該方法正確有效。
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