But a viewer needs to stand in designated zones to experience a 3-d effect; otherwise the screen becomes an out-of-focus blur.
观众需要站在指定的区域才能体验立体效果，否则屏幕变成一片模糊。
The 2-d effect and the initial energy influence of emitting electrons on space-charge-limiting current in diode are studied by PIC simulation and theoretical analysis.
采用理论分析和粒子模拟的方法研究了阴极发射电子初始能量和二维效应对二极管空间电荷限制流的修正。
The plastic surgery is a kind of familiar surgical operation currently, and the imitation of its 3-d effect becomes an important means to raise the surgical operation success rate.
医学整形手术是目前比较常见的一种外科手术，对其三维效果的仿真正成为提高手术成功率的重要手段。
A method based on the voxel makes the observer able to get a true 3-d effect freely without any additional facilities.
该技术是完全基于体素的显示方法，使得观察者自由地、不需要辅助设备地获得真三维的图像效果。
Unfortunately, this approach requires the viewer to look at the screen at a very specific angle in order to experience the 3-D effect.
不幸的是，这种方法需要观看者从某个特定的角度去看屏幕，才能体验到3D效果。
Unfortunately, this approach requires the viewer to look at the screen at a very specific angle in order to experience the 3-D effect.
不幸的是，这种方法需要观看者从某个特定的角度去看屏幕，才能体验到3D效果。
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