constant concentration 中文意思是什麼

constant concentration 解釋
固定含量
  • constant : adj 1 恆定不變的，固定的，穩定的，恆久的；繼續不斷的。2 不屈不撓的，堅韌的。3 忠實的，有節操的。n...
  • concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
  1. However, it is not easy to incorporate large n concentration in gap due to the large differences in lattice structure ( gan belongs to wurtzite structure while gap zinc blende structure ) and in lattice constant ( ~ 20 % ) between gan and gap, which will lead to an extremely large miscibility gap

    然而要在gap中實現高濃度的摻氮並不容易。這主要是由於gap和gan之間較大的物理特性的差異，特別是晶格結構和晶格常數的差異，使得gap和gan存在較大的可混溶性間隙，從而難以生長高質量的高摻氮的gap材料。
  2. Such parameters as ambient oxidizer concentration, temperature level, and fuel identity are held constant.

    周圍氧化劑濃度、溫度量級、燃料性質參數是保持恆定的。
  3. Abstract : the thermogram of s. dysenteriae of fungistatic action w as determined and the growth rate constant at different concentration of medicin e was calculated, and the optimum allowable concentration of the co salt complex abtained

    文摘:微量量熱法測定並研究計算了在不同濃度的鈷配合物作用下痢疾桿菌的生長速率常數和最佳用藥量。
  4. The purposes of the present study were to investigate ( 1 ) the hemodynamic effects of agmatine in anaesthetized dahl salt - sensitive ( ds ) hypertensive and dahl salt - resistant ( dr ) rats ; ( 2 ) the effect of agmatine on vascular tension in the isolated aortic artery of rats and the underlying receptor mechanism ; ( 3 ) the effects of local injection of agmatine on femoral, renal, and mesenteric vascular beds by constant flow perfusion method ; ( 4 ) the effect of agmatine on l - type calcium current ( / ca - t ) in rat ventricular myocytes with whole - cell configuration of the patch - clamp technique ; ( 5 ) the effects of agmatine on free intracellular calcium concentration ( ca2 + d of isolated rat ventricular myocytes

    （ 3 ）採用後肢、腎臟和腸系膜動脈在體恆流灌注法，觀察向灌流環路中直接注射胍丁胺的血管效應。 （ 4 ）應用全細胞膜片箝技術，觀察胍丁胺對大鼠心室肌細胞l -型鈣通道電流（ i _ （ ca - l ） ）的影響。 （ 5 ）用fluo3 - am負載分離的大鼠心室肌細胞后，由激光共聚焦法測定單個心室肌細胞[ ca ~ （ 2 + ） ] _ i的熒光強度，觀察胍丁胺對分離大鼠心室肌細胞內游離鈣濃度（ [ ca ~ （ 2 + ） ] _ i ）的影響。
  5. The critical concentration and critical particle surface area in constant rate section is studied. the floc density pa and the floc equivalent diameter da are calculated on the basis of experimental data and theoretic analysis

    研究了等速段的臨界濃度、臨界顆粒表面積；分析計算了絮團密度_ 、泥沙絮團當量直徑d _ 。
  6. Abstract : determined the power - time curves of the promoter bacteria of ganoderma lucidum for e. coli, using 2277 thermal activity moniter, a new experimental model of promoter bacteria growth were established. the growth rate constant and heat output at different concentration of ganoderma lucidum have been calculated. from - c and q - c curves the optimum concentration has also been established

    文摘:用熱活性檢測儀測定了天然藥物靈芝對大腸桿菌起促菌作用的熱功率-時間曲線，並根據曲線建立了細菌生長的新的實驗模型，按新模型計算了促菌作用下的生長速率常數，發熱量及最佳促菌濃度。
  7. According to the law of mass action, the law of mass conservation and the principles of chemical thermodynamics, mathematics model about components " modes of occurrence ( that is simple ions, complex anions and complex compounds ) and their concentration in dam foundation solution has been set up with balance constant method

    本文根據質量作用定律、質量守恆定律和化學熱力學的基本原理，應用平衡常數法建立了地下水水質組份存在形式（即單一離子、絡陰離子和絡合物）及其濃度分佈的數學模型。
  8. Limiting concentration of light component in distillate of binary batch distillation under constant reflux ratio

    恆迴流比二元間歇精餾輕組分的極限濃度
  9. A numeric method for computing limiting concentration of light component in the distillate of binary batch distillation under constant reflux ratio and hold - up in the column is introduced

    摘要介紹了採用恆迴流比操作方法，在塔頂、塔板持液時，間歇精餾二元理想混合物，餾出液中輕組分極限濃度的數值計算方法。
  10. To speed up the development of ethical medicine, we need to broaden our eyesights and improve our policies. we must think over the issue of the industrialization of ethical medicine from a standpoint of developing western economy, follow out the party ' s ethical medicine policy, cultivate ethical medicine talents, make a scientific development plan for ethical medicine, and promote the concentration and scale, realize the constant development of ethical medicine

    加速西部民族醫藥的產業化發展需要提高認識，調整對策，要從振興西部地區經濟的高度認識民族醫藥產業化的問題，認真貫徹黨的民族醫藥政策，培養民族醫藥人才，制定科學合理的民族醫藥發展規劃；積極推進西部民族醫藥產業實行集約化、規模化，實現民族醫藥資源的可持續發展。
  11. Haloes in the two accretion phases show systematically different properties, for example, the circular velocity vh increases rapidly with time and approximately equals the inner circular velocity vs in the fast accretion phase, but remain almost constant and less than vs in the slow accretion phase : the inner properties of a halo, such as rs and ms increase rapidly with time in the fast accretion phase but change only slowly in the slow accretion phase : the halo concentration changes slow in the fast accretion phase, but increases rapidly with the hubble expansion in the slow accretion phase. the inner structure and potential well associated with a halo is built up mainly in the fast accretion phase, while a large amount of mass can be accreted in the slow accretion phase without changing significantly the inner properties and the potential well

    ~ 4 ，其束縛能和具有相同圓周速度的等溫球大致相等; （ s ）在這兩個階段，暗暈的行為特徵迥異（例如，圓周速度均『在快速吸積階段增長迅速且略大於內部圓周速度: 、 ，而在緩慢吸積階段基本恆定甚至降低，且小於、 、 . : 、和呱在快速吸積階段增長迅猛，而在緩慢吸積階段增長滯緩） : （ l ）一個暗暈的內部結構和引力勢阱主要是在早期的快速吸積階段成長起來的，雖然在緩慢增長階段可以吸積大量的質量（超過10倍） ，但這並不顯著地改變其內部特徵和引力勢阱
  12. After 1989, the increase of demand slowed down and facing the complexion of low degree of industrial concentration of product market and financial strain of medi um and small - sized enterprises caused by the circulating trap of " credit squeeze - - - bad loan ", the advantageous enterprises " " wallow in money ", specifically, those listed companies that could finance from the stock market, began to take predatory pricing strategy in succession and tried to enlarge market share and obtain high return by squeezing medium and small - sized enterprises out of the market after 1998, the vicious circle of deflation and " credit grudging " of banks in product and credit markets, overcapacity, the difficulty of retreating of loss - incurring enterprises in some industries from the market for institutional reasons and over - competition in some industries, led to the incessant decrease of enterprises " global income, persistent increase of rate of debts and constant rise of ratio of bad assets of banks, which further intensified the vicious circle of deflation and " credit grudging " of banks

    如在改革開放初期，在產品市場需求旺盛和信貸市場預算軟約束的情況下，各類企業的最優決策就是採用高負債、高擴張的「負債的有限責任效應」策略來搶占市場並獲得高回報； 1989年以後，需求增速開始放緩，面臨產品市場產業集中度較低和信貸市場「信貸緊縮-不良貸款」循環陷阱導致的中小企業資金緊張的局面， 「錢袋鼓鼓」的優勢企業（尤其是那些可以通過股票市場融通資金的上市公司）紛紛採用掠奪性定價策略，試圖通過把中小企業擠出市場來擴大市場份額並獲得高收益； 1998年以後，產品市場和信貸市場形成了通貨緊縮和銀行「惜貸」惡性循環的狀況。產品市場上部分行業生產能力嚴重過剩，且由於體制等原因導致虧損企業無法退出，因此這些行業中出現了過度競爭的現象，企業總體收益的不斷下滑、負債率不斷提高以及銀行不良資產率的持續上升，又進一步加強了通貨緊縮和銀行「惜貸」的惡性循環。
  13. From the concentration dependence of bsa apparent diffusion coefficients, protein interaction parameters have been regressed. it bears a net effective charge of - 9. 0 and has a hamaker constant of 2. 8ket

    根據擴散系數隨蛋白濃度變化的斜率與離子濃度變化的相關性，回歸出了蛋白相互作用參數，蛋白所帶的有效電荷zp二一9 . oe 、 hamaker常量= 2
  14. The results showed that the accuracy and the repeatability for online concentration acquisition could not be assured with this approach even though the obtained electroconductivity curves were essentially consistent with those of hlozny ' s, because the electrode constant will be changed in the crystallization operation

    但由於懸浮晶粒及其在強流體場作用下對測試電極產生的沖刷破壞作用，致使電極常數改變，影響測定結果的準確性和重現性，難于實現濃度的在線測定。
  15. The results of absorption spectrum showed that the ratios of a685 to a730 are almost a constant during the increased process of chloroplast concentration

    吸收光譜實驗結果表明： a685 a730在葉綠體濃度增加的過程中幾乎不變。
  16. Liposome is an effective nuclide delivery agent for neutron capture therapy. in this paper liposomes containing encapsulated gadolinium complex were prepared and characterized. the influence of formulation factors such as ph, ionic strength, buffer, and storage time upon the stability of liposomes was investigated. the uptake rate constant and its concentration dependence of lgd in tumor cells were compared in vitro with that of gd complex itself. the results indicate that the uptake rate of lgd in tumor cells increases to eight times as much as that of gd - edta, but the release rate of gd from tumor cells containing lgd is remarkably lower than that from the tumor cells containing gd - edta. the results reveal that lgd would be a potential drug for neutron capture therapy of cancer

    制備和表徵了包埋gd - edta的脂質體，測定了ph ，離子強度，緩沖液組成及溫度對gd - edta脂質體的影響，比較了gd - edta脂質體和gd - edta被腫瘤細胞攝入的動力學曲線。結果表明， gd - edta脂質體在37和生理條件下最穩定，腫瘤細胞攝入gd - edta脂質體速率是gd - edta的8倍，而釋放gd的速率， gd - edta脂質體遠遠低於gd - edta ，這些結果提供了脂質體包埋gd - edta作為釓中子俘獲治療藥物的可能性。
  17. The results showed that kp value increased with the increase of the initial concentration and ph value of the feed phase. the determined diffusion coefficient showed good agreement with the value that were calculated by the experiential equation given by castillo r. reactive extraction equilibrium constant kr increased with the increase of the initial concentration of the feed phase and the carrier concentration, while kr value increased slowly in the high initial concentration of the feed phase

    分配系數的研究結果表明，分配系數kp隨著料液苯酚濃度增大而增大，隨料液ph值增大而升高;採用多孔板法測定水相中苯酚的擴散系數，並將測定值與經驗公式估算值進行對比，結果表明，測定結果是可靠的;表觀反應萃取平衡常數kr隨著載體濃度升高而增大，隨著料液濃度的增加而增大，而在濃度較大時， kr增大趨勢變緩。
  18. The onset of mitosis is induced by activation of mpf, a highly conserved complex consisting of a kinase, cdc2, and an activating subunit, cyclin b. during the cell cycle the concentration of the catalytic subunit cdc2 remains constant while cyclin accumulates from interphase to mitosis and is degraded at each metaphase - anaphase transition

    在許多物種的早期胚胎細胞分裂過程中，由間期到m期的連續分裂是一個重要特點。 mpf （ m期促進因子， m - phasepromotingfactor ， mpf ，又可稱為成熟促進因子maturationpromotingfactor ， mpf ）由cdc2和周期素b兩個亞基組成。
  19. From this natural archive they have learned that the atmospheric concentration of carbon dioxide was approximately constant for several thousand years and then began to grow rapidly with the onset of industrialization in the 1800s

    科學家從冰心這個天然檔案館得知，過去數千年間，大氣的二氧化碳濃度近似定值， 1800年代，工業化開始之後，濃度才快速增加。
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