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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
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| | In order to calculate the attenuation of gamma - ray passed through shield configurations, the shield configuration has been divided into some zones according to their materials. Every zone has been described by some basic geometry connected with logical operator symbols. The visual simulation programs are written by OpenGL. First some basic geometry have been modeled by space alternate coordinate, and then a special patch method has been developed for rendering the cross section, so the simulation of... | | 为了计算γ线穿透屏蔽物体的衰减量,需将屏蔽体划分为各自材料相同的几个区域。每个区域可用逻辑运算记号所连接的基本几何形状来描述。该可视化仿真程序用OpenGL编程,首先用空间座标变换法对基本几何形状建模,然后使用一种特殊的补缀法绘制交线截面,从而对用逻辑运算记号所描述的屏蔽体实现可视化仿真。该程序对(-)逻辑运算记号所连接的几何形状采用线模式来绘制,并采用混合技术处理使这个区域里层的不透明物体和外层的半透明物体都能显示出来。 | | 文摘来源 | | With the monomers of resorcinol and formaldehyde as precursor, mixing polyethylene glycol in the precursor, PEG-RF carbon with 710 m~2/g in specific surface and 2.8 nm in average pore diameter was synthesized by polymer blend method. The results of thermogravimetric analysis, X-ray diffraction and N_2 sorption isotherms indicate that the structure of pyrolytic carbon xerogel together is formed due to the phase separation structure of mixing organic xerogel and the thermal unstability of PEG. Cy... | | 采用新型聚合物混合法,在合成炭前驱体聚合物的单体溶液中混入热不稳定的聚乙二醇,制得了比表面积达710m2/g,平均孔径为2.8nm的新型中孔炭干凝胶PEG RF炭。X射线衍射、热重分析及N2等温吸脱附测试结果表明,炭前驱体的微相分离结构和热稳定性较差的聚乙二醇的存在导致了炭干凝胶中孔特征孔隙结构的形成。在30%H2SO4溶液中,对PEG RF炭和比表面积达1720m2/g的微孔T82型活性炭的电化学电容性能进行了对比研究。研究结果表明:当放电比电流为0.2A/g时,PEG RF炭和T82型活性炭的比容量分别为36F/g和48F/g;当放电比电流增至1A/g时,PEG RF炭和T82型的比容量分别为105F/g和94F/g;PEG RF炭具有比T82型活性炭更优异的电化学电容性能,两者孔隙结构的差异导致了炭凝胶电化学电容性能的差异。 | | 文摘来源 | | In order to understand the construction and distribution of the radioactive shield assembly,the visual simulation has been studied.At first,some mathematic models of the basic geometry have been built to realize the rendering of the radioactive shield assembly.The rendering of assembly can be simplified greatly by space alternate coordinate.Then a blend method has been developed for rendering the opaque body and translucent body.Using blend method,the interior construction of the ass... | | 为了解辐射屏蔽组合体的结构和分布,对其作了可视化仿真研究。首先建立了多个基本几何形状的数学模型来完成组合体的绘制。空间坐标变换法的使用可大幅度简化绘制过程。然后用混合法绘制不透明物体和半透明物体。使用混合的方法可使组合体中的内部结构都能显示。组合体的着色和光照可通过菜单、对话框来变更。组合体的移动和旋转可由键盘和鼠标的操作来控制。该文中显示了一个由管道、圆柱体和箱形体所组合成的屏蔽组合体的绘制结果。 | | 文摘来源 | |   |
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