全文获取类型
| 收费全文 | 291篇 |
| 免费 | 0篇 |
专业分类
| 电工技术 | 4篇 |
| 化学工业 | 33篇 |
| 金属工艺 | 9篇 |
| 机械仪表 | 10篇 |
| 建筑科学 | 19篇 |
| 矿业工程 | 3篇 |
| 水利工程 | 18篇 |
| 石油天然气 | 6篇 |
| 无线电 | 13篇 |
| 一般工业技术 | 140篇 |
| 冶金工业 | 20篇 |
| 原子能技术 | 2篇 |
| 自动化技术 | 14篇 |
出版年
| 2019年 | 5篇 |
| 2018年 | 3篇 |
| 2017年 | 6篇 |
| 2016年 | 3篇 |
| 2014年 | 6篇 |
| 2013年 | 7篇 |
| 2012年 | 7篇 |
| 2011年 | 14篇 |
| 2010年 | 7篇 |
| 2009年 | 8篇 |
| 2008年 | 3篇 |
| 2007年 | 8篇 |
| 2005年 | 3篇 |
| 2003年 | 5篇 |
| 2002年 | 6篇 |
| 2001年 | 7篇 |
| 2000年 | 10篇 |
| 1999年 | 10篇 |
| 1998年 | 11篇 |
| 1997年 | 7篇 |
| 1995年 | 6篇 |
| 1994年 | 4篇 |
| 1993年 | 5篇 |
| 1991年 | 4篇 |
| 1989年 | 5篇 |
| 1986年 | 2篇 |
| 1985年 | 3篇 |
| 1984年 | 5篇 |
| 1983年 | 3篇 |
| 1982年 | 8篇 |
| 1981年 | 5篇 |
| 1980年 | 3篇 |
| 1978年 | 3篇 |
| 1977年 | 8篇 |
| 1976年 | 10篇 |
| 1975年 | 4篇 |
| 1974年 | 7篇 |
| 1973年 | 5篇 |
| 1972年 | 2篇 |
| 1971年 | 3篇 |
| 1969年 | 6篇 |
| 1968年 | 2篇 |
| 1967年 | 5篇 |
| 1966年 | 3篇 |
| 1965年 | 6篇 |
| 1963年 | 4篇 |
| 1962年 | 7篇 |
| 1960年 | 5篇 |
| 1959年 | 3篇 |
| 1958年 | 2篇 |
排序方式： 共有291条查询结果，搜索用时 31 毫秒
1.
2.
3.
I. E. Ginzburg V. M. Zhigalkin S. V. Zhigalkin E. V. Plyusnina V. N. Semenov O. M. Usoltseva A. I. Chanyshev 《Journal of Mining Science》1998,34(6):482-490
Conclusions We have carried out an experimental study of the inelastic properties of solids with simple and complex loadings, producing
pure shear strains and the subsequent imposition of strain states of pure shear.
Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy
Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 16–26, November–December, 1998. 相似文献
| 1. | The data from experiments with biaxial tension on a specimen of the zirconium alloy E-110 demonstrate the presence of initial anisotropy of the elastic deformation and strength properties. |
| 2. | The test specimens have three orthogonal planes of elastic symmetry of the material, directed respectively along the axis of the specimen, along the tangential direction to the cylinder generatrix, and along the radial direction. These are the principal axes. The elastic constants were determined in the direction of these axes. |
| 3. | We have pointed out a trajectory of preliminary simple and complex loading that leads to an increase of strength and deformation properties of the material in one of the principal directions of the stress tensor, in comparison with the analogous properties in the case of simple loading. Such a trajectory consists of loading accompanied by partial unloading in one of the directions of preliminary plastic deformation, interruption of the increase of plastic strains in this direction, and an excess of the magnitude of the second principal stress over the first. |
| 4. | Regardless of the prehistory of simple and complex loading of the initially orthotropic material, accompanied by partial unloading in the direction of the preliminary plastic deformation, a repeated simple loading σ z =2σϕ, equivalent to the action of pure shear with the imposition of hydrostatic pressure, leads to a change in the deformation properties, i.e., to isotropic strengthening of the material. The onset of plasticity in such a repeated simple loading is determined by the stress intensity at the end of the first section of the preliminary loading trajectory, and the point at which this onset occurs is independent of the magnitude of the second principal stress and the intensity of stresses at the end of the second section of complex loading of the preliminary loading trajectory. This indicates that the onset and development of plastic strains along specific slip areasT is determined solely by the magnitude of the maximum tangential stress, and is independent of plastic slips along the other areasT 12 orT 23. |
4.
D'Humières D Ginzburg I Krafczyk M Lallemand P Luo LS 《Philosophical transactions. Series A, Mathematical, physical, and engineering sciences》2002,360(1792):437-451
This article provides a concise exposition of the multiple-relaxation-time lattice Boltzmann equation, with examples of 15-velocity and 19-velocity models in three dimensions. Simulation of a diagonally lid-driven cavity flow in three dimensions at Re = 500 and 2000 is performed. The results clearly demonstrate the superior numerical stability of the multiple-relaxation-time lattice Boltzmann equation over the popular lattice Bhatnagar-Gross-Krook equation. 相似文献
5.
N. S. Ginzburg A. M. Malkin N. Yu. Peskov A. S. Sergeev 《Technical Physics Letters》2006,32(10):896-900
A new scheme of feedback in a free-electron maser (FEM), which is based on the mutual scattering of propagating and quasi-cutoff (trapped) modes on a periodic Bragg structure, is considered. The trapped mode makes possible self-excitation of the system, while the energy exchange in a stationary generation regime is almost entirely determined by the interaction with a synchronous propagating wave. Using the proposed method, it is possible to improve mode selectivity with respect to the transverse index and accordingly decrease the working wavelength. 相似文献
6.
Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 2, pp. 11–12, March–April, 1991. 相似文献
7.
8.
9.
10.