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a complex     
相关语句
  复杂
     Study on Intelligent Data Fusion of Target Recognition in a Complex Environment
     复杂环境下目标识别的智能数据融合技术研究
短句来源
     MATHEMATICAL MODELLING OF COAL-WATER SLURRY GASIFICATION-CALCULATION OF THE EQUILIBRIUM COMPOSITION FOR A COMPLEX REACTION SYSTEM
     煤浆气化过程数学模型的探讨——复杂反应系统平衡组成的计算
短句来源
     ARTIFICIAL PHASE DEGENERATION IN THE DETERMINATION OF NON-CENTROSYMMETRIC STRUCTURES (Ⅱ) ——AN EXAMPLE OF SOLVING A COMPLEX HEAVY ATOM CONTAINING CRYSTAL OF SPACE GROUP P2_1
     求解非中心对称晶体结构的人工相位退化法(Ⅱ)——试解P2_1空间群含重原子的复杂晶体结构
短句来源
     APPLICATION OF MULTIPLE DYNAMIC ABSORBERS TO REDUCING THE VIBRATION LEVEL OF A COMPLEX CANTILEVER STRUCTURE
     多维动力吸振器对复杂悬臂结构减震之应用
短句来源
     Astigmatism compensation in arm of a complex ring cavity
     复杂环形腔的象散分臂补偿
短句来源
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  是复杂
     The corrosion of carbon steel in soils is a complex and random phenomenon.
     碳钢土壤腐蚀是复杂的随机现象。
短句来源
     FMS is a complex system,and it can be well analyzed by Petri net.
     FMS是复杂、大型的系统,利用Petri网的特有性质能很好地分析FMS系统。
短句来源
     The salt roasting of stone coal is a complex multiphase chemical reactions.
     石煤钠盐焙烧是复杂的气、液、固多相化学反应,焙烧气氛对钒焙烧转化率有重要影响。
短句来源
     These variables have a complex influence on national culture, which includes homogenization and polarization.
     这些力量对民族文化的影响是复杂的,既有推动同质化的方面,又有导致异质化的倾向。
短句来源
     Language is such a complex thing as the society is, and more complex is the language contact.
     语言是复杂的社会现象,而语言接触则更为复杂一些。
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  较为复杂
     Intensified studies were carried out on thermo-decomposition kinetic mechanism of Mg(OH)_2, we think that the thermo-decomposition of Mg(OH)_2 is a complex process and the whole decomposition process cannot be represented by only one mechanism function.
     本研究通过对Mg(OH)_2热分解动力学的深入研究,发现Mg(OH)_2的热分解是一较为复杂的过程,其热分解机理可分为两个阶段:低温段(280~397.8℃)热分解机理为成核控制机理,A3模型;
短句来源
     Of course as the achievement in the research of cognitive pragmatics, a complex discipline, the optimal relevance has also its weakness.
     当然作为认知语用学这一较为复杂学科的研究成果,最佳关联性因不能准确地进行量化也存在一定的局限性。
短句来源
     (3) The content of potassium has a complex relation with the reflectance.
     (3)植物体内的钾素含量与光谱反射值的关系较为复杂,其中钾含量与蓝、绿波段的相关性最好。
短句来源
     A complex but accurate formulae for ultimate stress in tendons is recommended.
     Naaman等提出的无粘结预应力筋极限应力公式 ,该公式计算虽较为复杂 ,但有较高的计算精度 .
短句来源
     To a physical educationist, it's still a complex task how to combine physics scientific method and knowledge in physical teaching.
     对于从事物理教学的教师来说,如何在物理教学中实施物理科学方法教育,与物理知识的传播和能力的培养有机结合在一起,仍是一个较为复杂的课题。
短句来源
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  较复杂
     Due to the client's variability and mobility, its key management becomes a complex yet preferential problem.
     由于客户端的多样性、流动性等因素,使得客户端的私钥管理成为一个较复杂的、也是必须优先解决的课题。
短句来源
     The experimental results of DSC and fluorescence spectroscopy showed that the thermal denaturation and thermal chemical denaturation of bIgG were both a complex irreversible process, and might follow a three-state mechanism.
     DSC和荧光光谱实验结果表明,bIgG的热变性和热化学变性过程都是较复杂的不可逆过程,这个过程可被看作一个三态变构过程.
短句来源
     The results show that the farm has established a complex energy-flow network system within five years.
     结果表明,经过5年的开发,康集生态农场已初步建成具有较复杂的网络式能流系统。
短句来源
     In this paper some former methods for report making in VB is briefly reviewed and a newly added data report disigner (DRD) in VB6 0 by a practical example is introduced, especially a way to design a complex report by store procedure accessing technology in DED.
     通过一个实用报表程序的制作过程 ,介绍了VB6 .0的新增报表设计器DRD . 尤其是通过DED访问带参数的存储过程技术 ,实现制作一个较复杂实用报表的途径 .
短句来源
     Lightning prevention is a complex work. In the operation of past, the digital seismic precursor instruments have been damaged by lightning several times and it affected the quality of observational data greatly.
     避雷工作是一项较复杂的系统工程,在数字化台网的运行过程中,易县台的数字化地震前兆观测仪器(以后简称数字化仪器)连续数次因遭雷击而损坏,给台站工作和资料质量造成巨大损失。
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      a complex
    LetH? be a real form of a complex semisimple group.
          
    If the variety is a complex affine space and the ring of invariants is isomorphic to a polynomial ring, then the action is conjugate to a translation (Theorem 3).
          
    LetZ=G/Q be a complex flag manifold andG0 a real form ofG.
          
    We investigate holomorphic self-maps of complex manifolds of the formG/Γ whereG is a complex Lie group and Γ a lattice.
          
    LetG be a complex reductive Lie group with maximal compact subgroupK andG×X →X a holomorphic action on a Stein manifoldX.
          
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    (1) Sodium salt of reduced codehydrogenase I has been obtained in good yield as a dry powder from codehydrogenase I by reduction with alcohol and alcohol dehydrogenase. This preparation was stable for at least 5 months when kept dry at -15℃. (2) The properties of the particle-bound codehydrogenase I cytochrome reductase system in heart muscle preparation were found to differ considerably from those of the soluble enzyme as obtained by Mahler et al. Among other things, the affinity for cytochrome c of the particle-bound...

    (1) Sodium salt of reduced codehydrogenase I has been obtained in good yield as a dry powder from codehydrogenase I by reduction with alcohol and alcohol dehydrogenase. This preparation was stable for at least 5 months when kept dry at -15℃. (2) The properties of the particle-bound codehydrogenase I cytochrome reductase system in heart muscle preparation were found to differ considerably from those of the soluble enzyme as obtained by Mahler et al. Among other things, the affinity for cytochrome c of the particle-bound enzyme is much greater than the soluble enzyme. The Michaelis constant for cytochrome c of the former is only one twelfth of that of the latter.(Fig. 2A). (3) With either oxygen or excess cytochrome c as electron acceptor, it was found that the overall activity, in terms of rate of oxygen consumption or cytochrome c reduction, when both succinate and reduced codehydrogenase I were oxidized simultanously, did not represent the sum of the rates of oxidation when these two substrates were separately oxidized but equalled only the faster of the two separate oxidation rates(Fig. 5, Tables 1, 2). If 2,6-dichlorophenol indophenol was used as the electron acceptor, the overall rate of simultaneous oxidation of these two substrates was found to equal exactly the sum of the rates of separate oxidation(Table 3). (4) When either oxygen or excess cytochrome c was used as the electron acceptor, reduced codehydrogenase I and succinate each inhibited the rate of oxidation of the other(Figs 4, 6 & 7). Evidence has been presented to show that the inhibition of succinate oxidation by reduced codehydrogenase I is not due to the accumulation of oxaloacetate. (5) When malonate was also added to the reaction mixture, succinate no longer produced any inhibition of the oxidation of reduced codehydrogenase I(Fig. 8). (6) It is therefore concluded that in heart muscle preparation both succinate and reduced codehydrogenase I are oxidized by cytochrome c through a common, velocity limiting factor. This is in accordance with the view previously reached by some workers from studies on the action of certain inhibitors. However, it should be noted that in our experiments no agents which might produce any conceivable change in the colloidal structure of the enzyme system has been employed. (7) It should be emphasized that our results clearly show that great caution must be exercised in drawing conslusion on the role an enzyme might play in a complex enzyme system from studies of the properties of a solubilized enzyme. (8) It is believed that the competition of two enzyme systems for a common linking factor as demonstrated in this report has provided a new method for studies on the mutual relations of two or more enzyme systems.

    (一)本報告提供了一個從輔酶Ⅰ,用酶還原法製備還原輔酶Ⅰ的方法。我們所製得的還原輔酶Ⅰ鈉鹽乾粉,可以在低温保存數月而不被氧化。 (二)與心肌製劑中顆粒相結合的輔酶Ⅰ細胞色素還原酶系,和用乙醇抽出的水溶性的輔酶Ⅰ細胞色素還原酶的性質頗不相同。其中比較重要的不同點是對於細胞色素c的親力,前者遠大於後者,其米氏常數僅約為後者的十二分之一。 (三)用一心肌顆粒製劑作為材料,無論用氧或過量之細胞色素c作為氫受體,還原輔酶Ⅰ與琥珀酸同時氧化時的總速度,不等於二者分別氧化時速度之和,而僅等於其中氧化較快者單獨氧化時之速度。但如用[2,6]二氯靛酚作為氫受體時,二者共同氧化時之總速度完全等於二者分別氧化時速度的和。 (四)當用氧或過量之細胞色素c作為氫受體時,琥珀酸與還原輔酶Ⅰ能彼此互相抑制對方氧化的速度。有足夠的實驗材料說明,還原輔酶Ⅰ對於琥珀酸氧化的抑制,不是由於草醯乙酸聚集的緣故。 (五)如果在反應混合物中同時含有琥珀酸脫氫酶的專一抑制劑,丙二酸,則琥珀酸對於還原輔酶Ⅰ氧化作用的抑制即被解除。 (六)根據以上的實驗結果,可以認為,還原輔酶Ⅰ及琥珀酸先通過一個共同的因子與細胞色素c作用。這個共同的因子在一般情形之下,也是...

    (一)本報告提供了一個從輔酶Ⅰ,用酶還原法製備還原輔酶Ⅰ的方法。我們所製得的還原輔酶Ⅰ鈉鹽乾粉,可以在低温保存數月而不被氧化。 (二)與心肌製劑中顆粒相結合的輔酶Ⅰ細胞色素還原酶系,和用乙醇抽出的水溶性的輔酶Ⅰ細胞色素還原酶的性質頗不相同。其中比較重要的不同點是對於細胞色素c的親力,前者遠大於後者,其米氏常數僅約為後者的十二分之一。 (三)用一心肌顆粒製劑作為材料,無論用氧或過量之細胞色素c作為氫受體,還原輔酶Ⅰ與琥珀酸同時氧化時的總速度,不等於二者分別氧化時速度之和,而僅等於其中氧化較快者單獨氧化時之速度。但如用[2,6]二氯靛酚作為氫受體時,二者共同氧化時之總速度完全等於二者分別氧化時速度的和。 (四)當用氧或過量之細胞色素c作為氫受體時,琥珀酸與還原輔酶Ⅰ能彼此互相抑制對方氧化的速度。有足夠的實驗材料說明,還原輔酶Ⅰ對於琥珀酸氧化的抑制,不是由於草醯乙酸聚集的緣故。 (五)如果在反應混合物中同時含有琥珀酸脫氫酶的專一抑制劑,丙二酸,則琥珀酸對於還原輔酶Ⅰ氧化作用的抑制即被解除。 (六)根據以上的實驗結果,可以認為,還原輔酶Ⅰ及琥珀酸先通過一個共同的因子與細胞色素c作用。這個共同的因子在一般情形之下,也是這兩個酶系統的速度限制因子。應該指出在我們的實驗中,並未使用任何可能影響酶系統結構的條件,因此我們的結果是在一個比較接近於生理狀態的情形之下獲得的。 (七)應該着重指出,從本報告的結果可以看到,一個用人為的方法從複雜酶系上溶解下來的酶的性質,有時並不能代表這個酶在有組織的酶系統中的真實情况。 (八)我們相信,本報告所說明的兩酶系競爭一個共同因子的一些現象,將为研究複雜酶系之間的相互關係,提供一個新的方法。

    In chronical experiments on dogs provided with gastric pouches, we showed that the gastric secretion stimulated by histamine can be reflexly inhibited by electrical stimulation on the skin. This inhibition can be shown with Heidenhain pouches as well as with Pavlov pouches, indicating that the phenomenon does not depend on an intact vagus innervation. Furthermore it can still appear in Heidenhain pouches after bilateral subdiaphragmatic section of the splanchnic nerves and bilateral extirpation of the solar...

    In chronical experiments on dogs provided with gastric pouches, we showed that the gastric secretion stimulated by histamine can be reflexly inhibited by electrical stimulation on the skin. This inhibition can be shown with Heidenhain pouches as well as with Pavlov pouches, indicating that the phenomenon does not depend on an intact vagus innervation. Furthermore it can still appear in Heidenhain pouches after bilateral subdiaphragmatic section of the splanchnic nerves and bilateral extirpation of the solar plexuses. In such dogs the adrenal glands are of course also severed from their external nerve supplies. It thus follows that the sympathetic innervation to the stomach and the adrenal glands are not indispensable either. Apparently there is some humoral factor as yet unknown, which inhibits gastric secretion and which can be reflexly mobilized by such means as electrical stimulation of the skin. On the other hand, we were able to show that both direct electrical stimulation of the splanchnic nerve and intravenous injection of adrenaline can inhibit the gastric secretion stimulated by histamine. This suggests that when the sympathetico-adrenal system is intact it is likely to be also involved in the inhibitory phenomenon under consideration. The phenomenon is evidently a complex one involving both nervous and humoral factors, and we had also shown that it requires the participation of higher nervous centres, being not elicitable in anesthetized animals. We wish to express our deep gratitude to Prof. T. P. Feng for suggesting this problem and for constant guidance throughout this work.

    (一)在慢性實驗中用備有小胃的狗,我們证明組織胺引起的胃分泌能反射地为皮膚電刺激及一些其他外界刺激所抑制。 (二)這抑制現象在除去胃的迷走神經支配相交或神經支配,並隔離腎上腺的神經聯系時,仍能出現。它似有某種可以反射地形成的抑制性體液變化為基礎。 (三)但在急性實驗中我們又證明大內臟神經和注射腎上腺素均能抑制組織胺引起的胃分泌,這指示在正常動物胃分泌的反射抑制仍可能通過交感神經-腎上腺系統而得實現。 (四)本文所述的胃分泌的反射抑制現象顯然包含複雜的神經-體液機制,並且是在高級神經中樞參加下產生的。

    By heat treatment study, extraction experiments and powder photography, the differential thermal effects occuring below 250°of three amorphous sulfides of antimony are inter- preted in this paper. At about 220°, all the three amorphous sulfides produce crystalline Sb_2S_3. In the neighborhood of 160°, the pentasulfide and tetrasulfide segregate into easily extractable sulfur and amorphous Sb_2S_3. The latter change has been identifid in the main with the following reaction: 1/xS_x→1/8S_8+~3 kcal. On the basis...

    By heat treatment study, extraction experiments and powder photography, the differential thermal effects occuring below 250°of three amorphous sulfides of antimony are inter- preted in this paper. At about 220°, all the three amorphous sulfides produce crystalline Sb_2S_3. In the neighborhood of 160°, the pentasulfide and tetrasulfide segregate into easily extractable sulfur and amorphous Sb_2S_3. The latter change has been identifid in the main with the following reaction: 1/xS_x→1/8S_8+~3 kcal. On the basis of the above identification, the pentasulfide and tetrasulfide prepared from Na_3SbS_4·9H_2O are probably complex systems of [Sb_2S_3+S_μ+S_λ] and of [Sb_2S_3+S_μ] respectively. The fact that a synthetic sample containing 91% amorphous Sb_2S_3 and 9% Sμ gives essentially the same differential thermal diagram as the pentasulfide and tetrasulfide strongly supports the proposed model. According to Currie, Bunsen's pentasulfide contains no easily extractable sulfur. However, Bunsen's pentasulfide may not be a chemical individual either, inasmuch as it produces easily extractable sulfur at about 160°. In the light of the proposed theory, Bunsen's pentasulfide is probably a complex system of [Sb_2S_3+2S_μ]. The differential thermal diagram of the pentasulfide is probably a pertinent reference to its quality.

    銻的三種無定形硫化物在250°以內的差熱效應,曾於熱處理實驗、硫的提取實驗與粉末法的結果的配合下取得了鑑定與解釋。五硫化二銻與四硫化二銻在160°附近進行一放熱的、析出容易脫去的硫的析硫作用,並在220°附近進行無定形Sb_2S_3的晶化作用。析硫作用主要是下列變化: 1/xS_x→1/8S_8+~3千卡而從硫代銻酸鈉製得的、含有~8%容易脫去的硫的五硫化二銻樣品基本上是下列複雜的無定形體系 [Sb_2S_3+S_μ+S_λ]Currie按照Bunsen方法製得的、不含容易脫去的硫的五硫化二銻樣品可能是下列複雜的無定形體系 [Sb_2S_3+2S_μ] 合成樣品[Sb_2S_3+S_μ]的差熱曲線與所謂五硫化二銻和四硫化二銻者並無二致。文中最後還曾指出了從差熱曲線來檢驗五硫化二銻質量的可能性等。

     
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