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101.
This paper presents a novel method for cost aggregation and occlusion handling for stereo matching. In order to estimate optimal cost, given a per-pixel difference image as observed data, we define an energy function and solve the minimization problem by solving the iterative equation with the numerical method. We improve performance and increase the convergence rate by using several acceleration techniques such as the Gauss-Seidel method, the multiscale approach, and adaptive interpolation. The proposed method is computationally efficient since it does not use color segmentation or any global optimization techniques. For occlusion handling, which has not been performed effectively by any conventional cost aggregation approaches, we combine the occlusion problem with the proposed minimization scheme. Asymmetric information is used so that few additional computational loads are necessary. Experimental results show that performance is comparable to that of many state-of-the-art methods. The proposed method is in fact the most successful among all cost aggregation methods based on standard stereo test beds. 相似文献
102.
A mathematical model has been developed to describe the various processes occurring in a flash furnace shaft. The model incorporates
turbulent fluid dynamics, chemical reaction kinetics, and heat and mass transfer. The key features include the use of thek-ε turbulence model, incorporating the effect of particles on the turbulence, and the four-flux model for radiative heat transfer.
The model predictions were compared with measurements obtained in a laboratory flash furnace and a pilot plant flash furnace.
Good agreement was obtained between the predicted and measured data in terms of the SO2 and O2 concentrations, the amount of sulfur remaining in the particles, and the gas temperature. Model predictions show that the
reactions of sulfide particles are mostly completed within about 1 m of the burner, and the double-entry burner system with
radial feeding of the concentrate particles gives better performance than the singleentry burner system. The model thus verified
was used to further predict various aspects of industrial flash furnace operation. The results indicate that from the viewpoint
of sulfide oxidation, smelting rate can be substantially increased in most existing industrial flash furnaces.
Formerly Graduate Student, Department of Metallurgical Engineering, University of Utah. 相似文献
103.
A mathematical model has been developed to describe the rate processes in an axisymmetric copper flash smelting furnace shaft.
A particular feature of the model is the incorporation of the four-flux model to describe the radiative heat transfer by combining
the absorbing, emitting, and anisotropic scattering phenomena. The importance of various subprocesses of the radiative heat
transfer in a flash smelting furnace has been studied. Model predictions showed that the radiation from the furnace walls
and between the particles and the surrounding is the dominant mode of heat transfer in a flash smelting furnace.
Formerly Graduate Student, Department of Metallurgical Engineering, University of Utah. 相似文献
104.
Eunhye Choi Hye-Eun Jo Kee Hyuk Sohn Tae-Young Kang Bumsik Kim Kang Pyo Lee Jung Sook Han Suyong Lee Sanghoon Ko 《Food science and biotechnology》2016,25(4):1053-1058
The effects of steaming time (6, 8, and 10 min), freezing storage period, and re-steaming for thawing on the textural properties of non-glutinous rice cakes (baekseolgi) were investigated. As the steaming time increased, the rice cakes softened. In particular, the sample that was steamed for 10 min showed lower hardness than those steamed for shorter periods. A short period of steaming was insufficient for water bound to the surface of the starch granules to penetrate the granules in the dough. During the re-steaming process of the frozen non-glutinous rice cake samples, the retrogradation of starch and water syneresis contributed to the increased hardness of non-glutinous rice cakes. 相似文献
105.
Il Seouk Park Chang Hyun Sohn 《International Communications in Heat and Mass Transfer》2011,38(8):1044-1049
An air core is generated during draining after rotating cylindrical tanks filled with liquid. Air cores have a complex flow structure including rotational motion and a change in the free surface shape. In addition, the generation and extinction of air cores are dependent on the initial rotating speed, the dimensions of the tank, and the liquid materials. This phenomenon is usually detected in various applications for different fields such as the flow in the tundish discharging process of the smelting process, the liquid fuel system of rockets, from the suction of pumps, and so on. In this study, the flow structures including the drain time, the change in the free surface shape, velocity field, and vorticity distributions are numerically and experimentally investigated. Both the numerically and experimentally results were in good agreement with each other with respect to the drain time. 相似文献
106.
Ji Yun Young Sohn Dong Kee Ko Han Seo 《Journal of Mechanical Science and Technology》2022,36(10):5087-5095
Journal of Mechanical Science and Technology - The importance of equipment technology for semiconductor mass production is growing as well as the exponential increase in demand for semiconductors.... 相似文献
107.
Kim Tae Wook Thein Wynn Shin Chang Yell Sohn Uy Dong 《Food science and biotechnology》2021,30(7):979-988
Food Science and Biotechnology - Chronic diabetes mellitus (DM) can cause liver dysfunction and other complications. As Humulus japonicus is known to have anti-inflammatory and antioxidative... 相似文献
108.
Jin-Sik Cheon Byung-Ho Lee Yang-Hyun Koo Je-Yong Oh Dong-Seong Sohn 《Nuclear Engineering and Design》2004,231(1):39-50
MOX fuel rod behavior due to PCMI during power transients was evaluated using a finite element code, ABAQUS. Clad elongation is calculated through a coupled temperature–displacement analysis where a half-pellet is axisymmetrically modeled. Parametric study for the PCMI model is preliminary performed to identify the dominant factors and examine the applicable range of the model. The comparison of the predicted results with recent MOX in-pile data shows that the centerline temperature and clad elongation are evaluated within an acceptable range. 相似文献
109.
In the present study, we demonstrated that fluorescent dyes could be nanoscopically dispersed in a polymer matrix that was immiscible with the dyes; the dyes were encapsulated in micelles. Using a model polymer composite, we also showed that the color of light emitted by light-emitting diodes (LEDs) could be controlled by coating fluorescent polymer composites onto the LEDs. For this purpose, fluorophores that were insoluble in toluene were solubilized into a solution of block copolymer micelles in toluene by the selective incorporation of fluorescent dyes into micellar cores. Because the micelles could be dispersed well in the polymer matrix without the formation of aggregates, fluorescent dyes encapsulated in the micelles were also effectively dispersed in the polymer matrix without macroscopic separation. The polymer composite can be evenly coated onto most substrates, regardless of their surface characteristics. Thus, light-emitting devices with well-controlled emission wavelengths and emission intensities can be fabricated by coating the polymer composite onto the surface of the device. 相似文献
110.
Controlled crystallization and characterization of cordierite glass-ceramics for magnetic memory disk substrate 总被引:6,自引:0,他引:6
Glass-ceramics containing cordierite (2MgO-2Al2O3-5SiO2) as a crystal phase based on the glasses in the system MgO-Al2O3-SiO2 were investigated for the application to magnetic disk substrate for higher storage capacity. Parent glasses were prepared with CeO2 addition as a flux and were crystallized by a controlled 2-step heat treatment The maximum nucleation and crystal growth rates were 2.4 × 109/mm3 · hr at 800 °C and 0.3 m/hr at 915°C respectively. Only - cordierite was precipitated after heat-treatment. After nucleation at 800 °C for 5 hours prior to crystallization at 915 °C for 1 hour, the resulting crystal volume fraction and crystal size were 17.6% and 0.3 m, respectively. Heat-treated specimens through the above condition showed the optimum properties for magnetic memory disk substrates as follows.; Bending strength of 192 MPa, Vickers hardness of 642.1 kg/mm2, thermal expansion coefficient of 39 × 10–7/K and surface roughness of 27 Å. 相似文献