首過反應 的英文怎麼說

中文拼音 [shǒuguòfǎnyīng]
首過反應 英文
first-pass effect
  • : Ⅰ名詞1 (頭) head 2 (首領) leader; head; chief 3 (表示方位) aspect 4 (姓氏) a surname Ⅱ動...
  • : 過Ⅰ動詞[口語] (超越) go beyond the limit; undue; excessiveⅡ名詞(姓氏) a surname
  • : Ⅰ名詞1 (方向相背) reverse side 2 (造反) rebellion 3 (指反革命、反動派) counterrevolutionari...
  • : 應動詞1 (回答) answer; respond to; echo 2 (滿足要求) comply with; grant 3 (順應; 適應) suit...
  1. In the model the film thickness in the passage was obtained at first using two phase flow theory ; then, similar analysis solution of concentration distribution of the pollutant in liquid phase and biofilm was obtained through mass component equation of pollutant in gas - liquid phases combined with the biochemical kinetic equation of mass transfer in biofilm and dismission of oxygen limited ; at last, the distribution of pollutant along the filter height and the waste gas purification efficiency were obtained

    該模型先運用兩相流理論獲得了通道內液膜厚度,然後通污染物在氣相、液相的質量組分方程,結合生物膜內的傳質與不?慮氧限制的生化動力學方程,獲得了污染物在液相和生物膜中濃度分佈的近似分析解,最終得到污染物在氣相中沿塔高的濃度分佈及廢氣凈化效率。
  2. In order to improve the electro - catalytic activity of platinum based catalyst to methanol oxidation, in this thesis, firstly prepare heteropoly acid modified pt / gc electrode with different concentration by cyclic voltammetry method, and then test the cyclic voltammetry curves individually in vitriolic and methanol solution. the study shows the best concentration for both phosphomolybdic acid and phosphotungstic acid is 1 10 ~ ( - 3 ) mol / l. and find the more heteropoly acid modified on electrode, the lower peak - up potential towards methanol because of the existence of oxygenous species

    為了改善鉑基催化劑氧化甲醇的催化活性,本論文先通循環伏安掃描法制備了不同濃度磷鉬酸和磷鎢酸修飾的pt / gc電極,通研究pt / gc電極在修飾前後在硫酸溶液中及含甲醇的硫酸溶液中的循環伏安行為發現,磷鉬酸和磷鎢酸均能在ptru / c電極上發生氧化還原,而且雜多酸修飾濃度對pt / gc電極氧化甲醇的催化活性有很大影響。
  3. Flumiclora - pentyl was prepared from p - fluorophenol as starting material via several steps such as chlorination, nitrification, reduction and condensation. the yield of the product was 50 %, and the purity was higher than 97 %

    摘要以對氟苯酚為原料,先與氯氣發生,生成2 -氟4 -氯苯酚,再經硝化、還原、縮合等幾步得到氟胺草酯,總收率達到50 % ,產品純度大於97 % 。
  4. The study conducted research on the following four fields : firstly, the characteristics of the interfacial polymerization system of piperazine aqueous solution / trimesoyl hexane solution were systematically investigated. the results show that at a certain molar ratio between the two monomers, piperazine and trimesoyl, at the two phase interface, a dense functional layer of ultra low pressure, high permeating flux and high salt rejection formed by controlling the time of interfacial polymerization, such as the composite membrane ( i ), the concentration in water phase is 0. 4 %, and 0. 1 % in organic phase, and the polymerization time is 1 minute

    本文主要進行了四個方面的研究,先系統分析和研究了哌嗪水溶液均苯三甲酰氯正己烷溶液界面聚合體系特徵、界面聚合中各影響因素對膜性能的影響等,結果發現,當界面處兩相單體(哌嗪和酰氯)分子摩爾比為某一比值時,通控制界面聚合時間(有機相處理時間) ,可以形成超低壓高通量高脫鹽的緻密功能層,如復合膜( ) ,水相濃度為0 . 4 ,有機相濃度為0 . 1 ,聚合時間1min 。
  5. In this paper, firstly the macro parameter of the series connection app was comprehensively analyzed, among which the trajectory location of the bullet emission and the terminal velocity of the bullet were mainly analyzed, and the feasibility of the series connection app to cope with explosive reactive armor was demonstrated. and then the macro design about the head of the series connection app was made, among which a particular analyse about the bullet " s launching process was made, from which we concluded the relation between the thickness of the airproof loop and the velocity of the bullet detached from the carrier and the relation between the length of the bullet and the velocity of the bullet detached from the carrier and the relation between the length of the bullet and the burning rate of the powder and the relation between the length of the bullet and the maximum pressure of the emission hole and the relation between the length of the bullet and the emitting time of the bullet, and the reasonable str ucture of the head of the carrier and bullet were designed, then the intensity of the head of the carrier was checked out using of the software of ansys

    本文先對子母式穿甲彈總體參量作了全面的計算分析,其中主要分析了子彈射出的彈道位置和必要的子彈著靶速度,論證了子母式穿甲彈對付爆炸式裝甲的可行性,然後對子母式穿甲彈彈頭部進行了總體設計,其中主要對子彈的發射程進行了詳細的分析,得出了母彈彈頭部發射孔內閉鎖環厚度與子彈飛離母彈速度的關系、子彈長度與子彈飛離母彈速度的關系、子彈長度與火藥燃燒率的關系、子彈長度與母彈彈頭部發射孔內最大壓力的關系以及子彈的長度與子彈發射所需時間的關系,設計出了合理的母彈彈頭部結構和子彈的結構,並利用ansys有限元分析軟體對母彈彈頭部的強度進行了校核。
  6. Oxygen diffusion transport and electrochemical reaction in the oxygen cathode of direct methanol fuel cell ( dmfc ) have been expressed with the tffa model. model calculation has been carried out to investigate the effects of structural parameters of the dmfc cathode on the electrode performance, which is respectively represented by the curve of cathode overpotential versus current density. much attention has been paid to parameters including the porosity of the reaction layer, the thickness of the thin - film on the flooded - agglomerate, the radius of the flooded - agglomerate, the volume fraction of the flooded - agglomerates in the reaction layer

    本文先運用tffa模型描述直接甲醇燃料電池( dmfc )陰極氧氣的傳遞和電化學程,研究了電位-電流密度曲線受陰極結構參數變化的影響程度,其中著重考慮了以下幾個參數:催化層的孔隙率,浸漬聚集體薄膜的厚度,浸漬聚集體的半徑,浸漬聚集體在催化層中的體積分數。
  7. This new model made a more precise prediction about the shs combustion way and its technological characters possible. 2, with the heterogonous shs model, lots of combustion way had been imitated by change systems relative factors and the rule of the combustion way change had also been studied, chemical reaction in these systems was controlled by a single mechanism

    在該模型中,次將體系的微觀不均勻特性、體系的基本物性及燃燒程中的化學機理與整體燃燒動力學行為聯系在一起,從而為更加準確地預測和控制shs體系的燃燒行為,優化shs的工藝程奠定了理論基礎。
  8. After almost ten years of successful national and international tours, the original chapertons wanted a creative break ( new plays are in preparation ), but due to the phenomenal demand, the group has performed with their second crew since may 2001. they presented their first show together in the summer of 2001 at the international theatre festival in edinburgh. critics and audience were ablaze with enthusiasm

    差不多十年在國內外作巡迴演出並屢獲好評后,斗車胎三人組的原班人馬希望稍作休息,並籌備新劇,但由於觀眾熱烈,劇團於2001年5月開始與第二班子一起表演,並於同年夏季在愛丁堡國際戲劇節中次同臺演出,贏得劇評家和觀眾的熱烈贊賞!
  9. It is necessary to make more profound research in the field of settlement prediction. in this dissertation, on base of the existing work, the three - point method which is the mostly used method in the settlement prediction has been studied thoroughly firstly, which indicated and discussed the deficiency of the three - point method, and as a result an improved three - point method was put out ; secondly, by analyzing the characteristics of the process of the foundation settlement we put forward the model for predicting foundation settlement based on " law of massaction ". the predictive result was ideal as we applied it to the 3. rd coalfield project of wenzhou power plant and project of wenzhou peninsula, which shows that the model deserve use in much more projects

    本文在對國內外關于地基沉降預測理論的研究進行綜述的基礎上,先對工程中常用的三點法進行了細致深入的研究,指出以工程實測數據證明的現有三點法在用時存在的不足,針對該不足進行了探討,並在此分析基礎上提出了預測結果更為理想的改進三點法;其次區別傳統沉降預測方法的研究途徑,本文從沉降程的發展特徵出發,根據描述物化程發展特徵的質量作用定律原理,探討了一種新的地基沉降預測方法:地基沉降預測的「質量作用定律」模型;本文還以溫州三期煤場工程及溫州淺灘圍塗促淤工程為背景,對上述改進三點法、地基沉降預測的「質量作用定律」模型的工程用與傳統的預測方法進行了比較,認為這些方法是可行的,並得出一些有用結論。
  10. Firstly, the steel frame is generally investigated and inspected, including the surface status, distortion, strain of the crane - beam, horizontal load and wheel - stress of the crane, dynamic characteristic and reaction of tne frame, so on. in this way. the particular status and characteristic of this kind of steel frame are mastered

    先,對鋼框架進行了全面的調查和檢測,包括鋼框架的外觀狀況、變形、吊車梁變、吊車輪壓和水平荷載、框架動力特性和動力等,掌握了該類鋼框架在實際使用程中的具體特性和狀況,並提出吊車輪壓和水平荷載的測試方案和推斷方法。
  11. The present studies aimed to find the responses of neurons and glias in the target and other brain areas of the linear accelerator - irradiated rats. in the first experiment, time - dependent neurons changes in the brain after hemispheric irradiation at an single - fraction maximal dose of 20 gy were observed by investigating the expression of an immediate early gene, fos protein. the results shown : compared with that of the un - radiated rats, the expression of fos protein in the irradiated brain decreased distinctly 24 hours and 1 week after irradiation

    先,利用即刻早期基因fos的表達,做了同一照射劑量( 20gy )照射大鼠半腦后不同存活期間( 1d , 7d , 14d , 2ld , 28d )大鼠全腦神經元動態變化的觀察,發現:受照射后1d 、 7d大鼠腦內各部位fos蛋白表達均明顯減少,隨著時間的延長,其fos免疫性細胞數量逐漸增加,照射后28d ,延髓、第四軍醫大學碩士學位論文腦橋內hs免疫陽性細胞數量恢復並超正常對照組水平,但中腦、間腦及端腦內未恢復到正常對照組水平。
  12. Applying some theories and methods in industrial structure and strategic management, the article integrates papermaking industry ' s actuality and tries to set down strategic measures. firstly, by analyzing its interior and exterior surroundings and applying the factor evaluating matrix, papermaking industry ' s problems are found that it can not effectively react to the exterior surroundings and has relatively inferior interior. by applying swot matrix, main opportunities, threaten

    先,通對行業內外部環境的分析,運用環境因素評價矩陣揭示了目前造紙產業對外部環境做出的有效還不夠,內部環境還處于相對劣勢地位,運用swot矩陣確認了造紙產業主要機會與威脅、主要優勢與劣勢;其次,確立了造紙產業的使命與目標,並使其與有關的環境因素相結合,運用swot匹配矩陣,先提出了戰略備選方案,接著運用定量戰略評價矩陣對造紙產業的發展戰略方案進行了優化。
  13. In the third chapter of this thesis, the nickel electrodeposition process in leaching solution containing ammonia and chloride was summarized, and the electrochemical behaviour of nickel electrodeposition in ammonia complex bath was investigated by measuring polarization curves. the effects of total nickel, ammonia, ammonium chloride concentrations in the electrolyte as well as its anion species and temperature were studied systematically

    在第三章中先對氨絡合物體系電積金屬鎳的工藝進行了總結,並通極化曲線測量,對氨絡合物體系中鎳陰極電沉積電化學行為進行了研究,系統探討了溶液中總鎳離子濃度、氨水濃度、氯化銨濃度、陰離子及溫度等工藝條件對鎳陰極還原的影響,而後著重對電積鎳的機理進行了研究。
  14. By studying and using conventional 1c process in combination with electron beam lithography ( ebl ), reactive ion etching ( rie ) and lift - off process, several efficient results are produced : semiconductor and metal nano - structures are fabricated ; the matching problem of photolithography and electron beam lithography is well solved ; the process efficiency is improved ; the process is offered for the controlled fabrication of nano - structures by repetitious process testing ; several nano - structures such as si quantum wires, si quantum dots, double quantum dot structures and tri - wire metal gate are firstly fabricated by using ebl and rie processes

    研究利用常規的硅集成電路工藝技術結合電子束光刻,離子刻蝕和剝離等技術制備半導體和金屬納米結構,很好地解決了普通光刻與電子束光刻的匹配問題,提高了加工效率,經多次的工藝實驗,摸索出一套制備納米結構的工藝方法,次用電子束光刻,離子刻蝕和剝離等技術制備出了多種納米結構(硅量子線、量子點,雙量子點和三叉指狀的金屬柵結構) 。
  15. In this paper srco3 powders are first time synthesized successfully by low temperature solid state reaction with srcl2. 6h2o and ( nh4 ) 2co3. the size of srco3 is about 30 - 50nm. compared with liquid state method, this method produces little conglomeration and is easy to synthesize nanopowders

    本論文根據低熱固相化學原理次以srcl _ 2 ? 6h _ 2o和( nh _ 4 ) _ 2co _ 3為原料成功合成了30 ? 50nm的srco _ 3粉體,克服了一般液相沉澱法易發生粉體團聚和難于制備納米級srco _ 3粉體的弊端,並通研究找到了低熱固相終點的標志。
  16. The support membrane is polyethersulfone ultrafiltration membrane, the concentration of polyacrylic acid was selected at 0. 05wt %, a suitable paa / pei ratio was 1 / 5 - 1 / 10 with a number of 4 bilayers. the molecular weight of paa was 4 000 000. the corresponding filtration time of the first paa layer range was 10 minutes while the reaction time was 20 minutes

    基膜選用聚醚碸超濾膜,聚丙烯酸濃度為0 . 05wt % ,聚丙烯酸與聚乙烯亞胺濃度配比為1 / 5 - 1 / 10 ,復合四層, paa分子量4000000 ,濾時間10min ,時間20min 。
  17. Some stiffness matrices of special elements such as rubber bearings and components with field are derived from primary - secondary and inverse transform in structural matrix analysis. then, seismic response analytical models and non - isolated continuous rigid frame bridges are set up, while considering the interaction of soil - pile - structure and traveling wave effect simultaneously. finally, the seismic time history response of the two models is calculated by means of the finite element method, and the results show that the isolated bridge posses powerful earthquake resistance

    先論述了公路大跨徑橋梁的地震分析方法,其中包括樁-土-結構相互作用、行波效等因素對結構物的影響;其次,利用結構矩陣分析中的主從變換和逆步變換,推演了幾個特殊單元的剛度矩陣,包括橡膠隔震層單元和帶剛域構件單元;最後,考慮樁-土-結構相互作用和行波效的結合,分別建立隔震與非隔震連續剛構橋地震分析模型,通有限元法對兩種結構進行時程分析,結果表明:隔震層上部結構的地震加速度、位移均明顯減小,這說明隔震的連續剛構橋具有很好的抗震能力。
  18. This research began with detecting the rpob gene mutations of 37 mycobacterium tuberculosis clinical isolates by polymerase chain reaction - single strand conformation polymorphism ( pcr - sscp ) to study the application value of this method as a new molecule testing method for drug susceptibility

    本研究先通聚合酶鏈?單鏈構象多態性分析技術對37株結核分枝桿菌臨床分離株的rpob基因進行突變檢測,目的在於探討pcr - sscp作為新的分子藥敏試驗方法的用價值。
  19. The nucleic acids of the all influenza viruses conducted in the research were extracted from the viruses propagated in specific - pathogen - free chicken embryos. all of the eight segments were amplified by rt - pcr, and the purified pcr products were done cycle sequencing with specific primers, furthermore, the sequencing products were purified and run gel on abi prism 377 dna sequencing machine. the specific primers of the eight genes for pcr and cycle sequencing were designed using the ohgo ( 4. 0 version ) and genedoc ( 2. 3 version ) software

    先將實驗用毒株在spf雞胚中增殖,提取核酸,然後用oligo ( 4 . 0版本)和gendoc ( 2 . 3版本)軟體設計h9n2aiv所有8個基因片段特異的pcr引物及序列測定引物,通rt - pcr方法擴增所有毒株的各個基因片段,純化後用特異引物進行測序產物純化后在abiprism377dna序列分析儀上進行序列測定,然後用wisconsinsequenceanalysispackage ( gcg , 10 . 2版本) 、 phylogeneticanalysisusingparsimony ( paup , 4 . 0版本)和treeview ( 1 . 5版本)軟體進行序列的數據編輯、序列翻譯、進化樹繪制和遺傳演化分析。
  20. First, in order for reserve requirements to work effectively as a flexible buffer, an averaging provision would be necessary to enable the requirements to be met on average over a specified maintenance period : this arrangement might well add to interest rate volatility under certain conditions by encouraging banks to over - or under - react to market movements that changed expectations about the overnight interest rate

    先,為使儲備比率規定能發揮靈活有效的緩沖作用,必須制定一項平均儲備要求,使儲備比率在指定的儲備維持期平均達到要求。但這項安排可能在某些情況下會使銀行對市場動向作出度或不足的,影響隔夜息率的預期,最終而增加利率波動。
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