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界面传递
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  interfacial transport
     The experiments show that boiling nucleation was closely dependent upon the pore structure and dvnamic bubble behavior including interfacial transport, dryout/rewetting process were characterized in different regions, or narrow corner, sparse pore and/or main pore zone and tightly packed-zone, respectively.
     实验表明,非均匀孔隙内加热丝上的沸腾核化具有空间区域性,气泡动力学特性包括界面传递、干涸与湿润过程在不同特征区域,如角缝区、稀疏区和密集区呈现出各自特征。
短句来源
  interface and transmitting
     Developing Chinese interface and transmitting information in Chinese is of tremendous value to spot rescue and maritime expertis system.
     开发中文界面,传递中文信息,对海上现场救助和海上专家系统具有极大的价值。
短句来源
  “界面传递”译为未确定词的双语例句
     Study on the Transfer Behaviour of Josamycin Across Water/Nitrobenzene Interface
     交沙霉素在水/硝基苯界面传递行为的研究
短句来源
     The results show that for the given experimental conditions the length of interfacial stress transfer is 0.18 mm and the maximum ISS is located at x =0.11 mm.
     结果表明:在给出的实验参数下,界面传递应力长度为0.18mm,最大界面剪切应力的位置在x为0.11mm处。
短句来源
     In co doped samples,Fe 3+ and V 5+ ,serving as hole and electron traps,respectively,are beneficial for both hole and electron interfacial charge transfer reaction.
     共掺杂催化剂中 ,Fe3+ 、V5+ 分别提供了空穴与电子的陷阱 ,同时加快了电子与空穴的界面传递反应 ,从而更有效地提高光催化活性。
短句来源
     Experimental study on interface-transferring properties of FBG embedded in CFRP
     埋入CFRP的FBG光纤传感器界面传递特性实验研究
短句来源
     Study of Transfer of La(Ⅲ) across the water/nitrobenzene interface facilitated by nbutral innophore DAM
     中性载体配位推动La(Ⅲ)在水/硝基苯界面传递的伏安行为
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  相似匹配句对
     Real-time Message Passing Interface
     实时消息传递界面
短句来源
     THE STRESS TRANSFER AND INTERACTION ON THE INTERFACE OF COMPOSITE
     复合材料界面的应力传递界面物质的作用
短句来源
     INTERFACE FRACTURE
     界面断裂
短句来源
     transmission of signal;
     信号的传递 ;
短句来源
     the module of interface.
     5.界面模块。
短句来源
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  interfacial transport
For the three-phase catalytic membrane reactor, interfacial transport resistances and intraparticle diffusion limitations did not influence the hydrogenation reaction.
      
Separated flow modelling and interfacial transport phenomena
      
Application of Statistical Rate Theory of Interfacial Transport to Study Solid Surface Heterogeneity from Controlled-rate Therma
      
A quantitative analysis of the obtained spectra is presented, based on application of the statistical rate theory of interfacial transport (SRTIT) to describe both adsorption and desorption kinetics.
      
Similar processes also mediate interfacial transport in other permeable sediments.
      
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In the application of fluidization to chemical metallurgy, many processes involve the transport of heat and mass both inside a particle and between the particle and the surrounding fluid. The term, mixed specific resistance, R′(R′=Nu′=hD_p/k_s and R′=Sh′=h_DD_P/D_s for heat and mass transfer, respectively), is proposed, through which, by means of the curve shown in Figure 2, it is possible to estimate the fraction of total resistance due to transfer inside the particle, thus permitting one to ascertain whether...

In the application of fluidization to chemical metallurgy, many processes involve the transport of heat and mass both inside a particle and between the particle and the surrounding fluid. The term, mixed specific resistance, R′(R′=Nu′=hD_p/k_s and R′=Sh′=h_DD_P/D_s for heat and mass transfer, respectively), is proposed, through which, by means of the curve shown in Figure 2, it is possible to estimate the fraction of total resistance due to transfer inside the particle, thus permitting one to ascertain whether or not a given transport process can be effectively hastened by dilute-phase technique.The effectiveness of dilute-phase technique in accelerating transport processes is primarily due to the unique characteristics of its particle-fluid dynamics. After an analysis on the fixed bed, a single particle in a fluid, and the dense—and dilute—phase fluidized systems, the present paper points out that a differentiation should be made between the local transfer coefficient and an apparent value based on the entire system. For densephase fluidization with gases, for example, the latter may be lower than the former by 2—3 orders of magnitude. This tremendous disparity is mainly caused by the back-mixing of both the particles as a group and of the fluid, as well as by the heterogeneous nonuniformity characteristic of may a particle-fluid system. Based on the present analysis, which is duly supported by experimental evidence, it is shown that dilute-phase technique can be used effectively to reduce back-mixing and to suppress the heterogeneous nature in nonuniform velocity fronts, thus raising the values of apparent transfer coefficients to the range of the local coefficients of the idealized single particle model. From the point of view of system pressure drop, too, dilute-phase fluidization represents much lower power consumption than the corresponding fixed bed or dense-phase operation.

在流态化冶金中許多过程包含顆粒內部和顆粒与其周围流体之間的传热和传貭,本文提出了一个混合对比阻力R′(对于传热和传貭分別为R′=Nu′=hD_P/k_s,R′=Sh′=h_DD_P/D_s),通过图2的曲綫来近似地計算顆粒內部传递过程占总传递过程阻力的分数,从而可以确定哪些过程可以有效地通过稀相技术来加速。稀相技术在提高颗粒—流体界面传递速度的显著效果有賴于稀相流态化中顆粒—流体的流动特点。本文分析了固定床、单顆粒和浓相、稀相流态化床中颗粒与流体的运动,并指出顆粒—流体间的传递系数可以分为局部的真值和系統的表观值两种,对浓相流态化床而言,后者可低于前者2—3个数量級。此巨大差别主要是由于顆粒羣的、流体的返混以及流速分布的非齐次性所致。根据分析和实驗数据,稀相操作是减少返混和降低流速分布非齐次性的有效措施,从而可以提高表观传递系数,使其接近于(甚至超过)单顆粒的理想数值。从系統压降的分析,稀相流态化的能量消耗亦将远远低于固定床和浓相流态化。

In order to improve the shear property and water endurance of CFRP, the adhesion and the shear failure of epoxy resin reinforced by electrodeposited carbon fiber were investigated and the mechanism of eiec-trodeposition was discussed.Specimens of epoxy resin reinforced unidirectionally by electrodepo-sited carbon fiber have been tested. The results are shown in tables 1 and 2. It is obvious that the interlaminar shear strength of specimens reinforced by the treated fiber is enhanced up to 1000kg/cm2. It is worth...

In order to improve the shear property and water endurance of CFRP, the adhesion and the shear failure of epoxy resin reinforced by electrodeposited carbon fiber were investigated and the mechanism of eiec-trodeposition was discussed.Specimens of epoxy resin reinforced unidirectionally by electrodepo-sited carbon fiber have been tested. The results are shown in tables 1 and 2. It is obvious that the interlaminar shear strength of specimens reinforced by the treated fiber is enhanced up to 1000kg/cm2. It is worth notice that there are no losses in other mechanical properties, especially in impact strength with enhancement of ILSS.The electrodeposition mechanism on carbon fiber was investigated by means of IR and NMR (Figs 4 and 5). The observation of the electrode-posited layer on fiber with SEM and ESCA(Fig. 6) demonstrated that the layer covered the fiber uniformly, compactly and completely, even entered tiny holes and grooves on the fiber surface. As the interface between fiber and deposited layer is a key problem due to the reaction of large number of carboxyl groups on the deposited layer with epoxy resin matrix, it displays interface adhesion fully with "anchor" effect, transfers the stress at the interface effectively, changes the formation and the development of cracks and confines the way of water penetration. The tailoring of the electrodeposited interlayer turnsathe simple shear failure at the interface into a complex failure mode, which enhances a series of mechanical properties such as shear strength, water endurance, impact strength and others.

用电沉积方法将含羧基的共聚物沉积于碳纤维表面后,可以使单向碳纤维增强环氧的层间剪切强度从未处理时的650kg/cm~2提高到1000kg/cm~2以上,用扫描电子显微镜观察剪切断口,得到与强度数据一致的破坏模式,表明电沉积层的界面粘合作用提高了纤维-树脂基体界面传递应力的能力,改变了界面附近裂缝的形成和扩展。已有数据还表明,此法在提高层间剪切强度的同时,并不削弱其它力学性能。用红外光谱等实验初步证实了电沉积过程的负离子——自由基机理,观测到沉积层在纤维表面的附着情况。

It was found that the polyethylene glycols (PEG) and their ethers possess the catalytic effect in phase transfer N-alkylation of imidazoles, which has proved to be pseudo first order kinetically with alkyl halides. Rate constants of a series of N-alkyl imidazoles with C_4-to C_(16)-alkyl groups were obtained. The coordination of imidazole sodium with PEG of the general formula HO(CH_2CH_2O)_n H were investigated using ~1H NMR technique. The complexation of (CH_2CH_2O)_n unit(n=5) in PEG with alkali metal ion...

It was found that the polyethylene glycols (PEG) and their ethers possess the catalytic effect in phase transfer N-alkylation of imidazoles, which has proved to be pseudo first order kinetically with alkyl halides. Rate constants of a series of N-alkyl imidazoles with C_4-to C_(16)-alkyl groups were obtained. The coordination of imidazole sodium with PEG of the general formula HO(CH_2CH_2O)_n H were investigated using ~1H NMR technique. The complexation of (CH_2CH_2O)_n unit(n=5) in PEG with alkali metal ion led to PEG ion pairs possessing catalytic effect between two phases in the reaction of N-alkylation of imidazoles.

本文报道聚乙二醇(PEG)及其单醚类化合物在咪唑N-烷基化反应中的催化效应,它是以组成聚乙二醇的(CH_2CH_2O)单元中的氧同Im~-Na~+形成离子对参与反应的.催化剂活性与分子量关系不大,主要取决于分子链中有效的(CH_2CH_2O)单元个数,并以不少于5的单元个数组成配合基元通过界面传递阴离子.在一定的催化剂浓度下,遵循假一级反应动力学关系.由此求得的不同碳链(C_4~C_(16))烷基溴和咪唑发生N-烷基化反应的速度常数,显示碳链的空间结构对反应有明显的影响.咪唑和正-丁基溴发生N-正丁基化反应的活化能为12.4±0.5kcal/mol,还求取了该反应的活化参数△S、△H、△G,并与使用季铵盐和冠醚类化合物作相转移催化剂(PTC)的反应结果进行了对比.

 
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