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A simply and analytical formula of the axial light intensity distribution behind a circular aperture is derived by using the Helmhotz-Kirchhoff integral theorem and the Kirchhoff's boundary conditions.It is studied the nonparaxial on-axis intensity distri
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用亥姆霍兹-基尔霍夫积分定理和基尔霍夫边界条件,推导出了平面波经小圆孔非傍轴衍射时轴上强度的简单解析表达式,研究了平面波经小圆孔后整个衍射空间非傍轴的轴上光强分布.给出了计算圆孔菲涅尔数的精确公式,重新检查了通常的菲涅尔数公式的有效性.数值计算显示,应用解析表达式所得的结果与应用衍射积分公式所得的结果完全一致. |
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A simulated analysis of the density of Shanghai downtown population by negative indexes and second functional indexes showed that the relocation of Shanghai downtown population basically conformed to the fundamental mode of large cities' transition from t
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在我国绝大多数城市还处于城市化过程中的集聚阶段时，上海等一些大城市出现了郊区化的趋势。 |
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A simulated bridge deck is tested for durability and strength to determine its breaking point.
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这个模拟桥面用来测试其耐力与强度，以确定断裂点。 |
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A simulated disk drive whose data is actually stored in RAM. Preserved over warm resets.
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模拟出来的硬盘驱动器，其数据实际存储在RAM中，热启动情况下数据得以保留。 |
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A simulation by economists at UBS gives a sense of the risks.
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由UBS经济学家所做的模拟结果给出了这些风险的后果。 |
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A simulation method is proposed to predict the motion artifacts of plasma display panels (PDPs).The method simulates the behavior of the human vision system when perceiving moving objects.The simulation is based on the measured temporal light properties o
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针对目前等离子显示屏普遍存在的运动伪像问题,提出了一种新颖的模拟计算方法,该方法实现了对等离子体显示屏运动伪像的准确、快速估计.该方法通过测量等离子显示屏不同颜色不同灰度下光信号随时间的变化情况,仿真人眼对运动图像的视觉感知行为,模拟计算出任意图像以一定速度运动下的视觉感知效果.新算法不但加入了等离子显示屏荧光粉的延迟效应的影响,而且提高了模拟计算速度.所得模拟结果与实际主观视觉感知实验相符.这种快速准确的估计使对等离子显示器件运动伪像的客观评价成为可能. |
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A simulation model is established in a full scope simulator.
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在全范围模拟机上建立了一种仿真模型。 |
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A simulation of petroleum distributed system is done, and the result shows that the bullwhip is reduced.
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同时以一个石油分销系统为对象进行了供应链牛鞭效应的随机控制仿真实验，实验表明牛鞭效应受到了抑制。 |
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A simulation system of effectiveness evaluation for electronic countermeasure (ECM) is investigated under attack-defense environment.
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摘要介绍了一个基于攻防对抗环境的电子对抗效能评估计算机仿真系统。 |
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A simulator can be used to test pieces of the software before the embedded hardware is available.
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仿真器一般用来测试嵌入式硬件可用之前的软件。 |
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A simultaneous combination of sounds conventionally regarded as pleasing and final in effect.
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和音一个习惯上被认为具有和谐和决定性效果的同时奏出的音程组合 |
