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    题名 作者 年代 出处 被引量
1Computer Modeling: an Important Tool in Materials Processing显示文摘The development of techniques to control and use materials, especially metallic materials continues to play a key role in the technological advancement of modem day society. A variety of materials processes have been developed overtime, and are applied to design and fabricate products. Heat treatment of metallic materials has been the method of choice applied to improve mechanical properties such as strength, hardness, and toughness, as well as to improve the homogeneity of properties in materials such as corrosion resistance. The molt significant success stories in the application of materials processes involve the heat-treatment of steel. The reasons for this largely lie in the ease with which steel microstructures can be altered by controlled heating and cooling. The objective of computer modeling of materials processes is to maximize on the beneficial factors while keeping to a minimum the negating effects such as components distortion and residual stresses. Computer modeling is a powerful tool in achieving this objective in the sense that with it, the effect of parameters associated with materials processes can be analyzed systematically in order to optimize them before actual production begins.L.L Meekisho, X Chen Portland State University, P0 Box 751, Portland, Oregon 97207 USA Automated Analysis Corporation, Peoria, IL USA 2000Journal of Shanghai Jiaotong university(Science)2000,5,1:10
232km distributed temperature sen sor based on Brillouin loss in an optical fiber 显示文摘Box X Webb D J Jackson D 1993OpticsLetters1993,18,18:1
3Evapotranspiration and primary productivity: Thornthwaite memorial model 显示文摘Lieth H Box E O X 1972Clima- tology1972,25,2:1
4INVESTIGATION OF UNSTEADY EXCITATION EFFECTS ON AERODYNAMIC PROPERTIES OF AIRFOILS显示文摘In this paper, the techniques to manage and control the flow over airfoils by using the external unsteady excitations are investigated. The mechanisms of these excitation effects are also explored. The principal goal of this study is to gain a better understanding and to find the possible ways for enhancing the aerodynamic efficients. The experimental investigations are carried out in two low-speed wind tunnels. The test models are two dimensional airfoils with different section geometries. Four means of excitations have been used in these experiments. (1) The pitch oscillation of the airfoil high-angle-of-attack situation. (2) The moving surface effects of the airfoil with a leading edge rotating cylinder. (3) Oscillating leading edge flaperon. (4) Small oscillating spoiler located near the leading edge of the airfoil. The lift, drag and pitch moment coefficients are measured in these experiments. But, we will put the emphasis only on the 'dynamic amplifying effects' on aerodynamic lift in this paper.Cui E J, Fu G M Yu X T Beijing Institute of Aerodynamics P.O. Box 7215, Beijing, China 1991Chinese Journal of Aeronautics1991,6,2:1
5Evapotranspiration and primary production:C W Thornthwaite Memorial Mode显示文摘Lieth H Box EO X 1972Publications in climatolo-gy1972,25,2:1
6Evapotranspiration and primary production: C W Thornthwaite Memorial Mode 显示文摘Lieth H Box E O X 1972Publications in climatalogy1972,25,2:1
7Greenlandice sheet albedo feedback: thermodynamics and atmosphericdrivers显示文摘BOX J E FETTWEIS X STROEVE J C 2012 2012The Cryosphere2012,6,:1
8Evapotranspiration and Primary Productivity:Thornthwaite Memorial Model显示文摘Lieth H Box E O X 1972Climatology1972,25,2:1
9Evapotranspiration and primary produc-tivity: Thomthwaite memorial model 显示文摘Lieth H Box E O X 1972Climatology1972,25,2:1
10Application of Differential Scanning Calo- rimetry to the study of thermal energy storage 显示文摘Chemistry Division Oak Ridge National Laboratory P 0 Box X 1978Ther- mochimica Acta1978,26,:1
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