shadow surface

That casts a shadow on the Earth surface.

那阴影投射在地球表面。

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Drawing Perspective Shadow on Conical Surface by Tangent Plane Method

切平面法作圆锥画面透视阴影

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In addition, the features of the Shadow Mask Type PDP studied and developed by Southeast University are introduced and made comparison with the surface discharge PDP.

此外，还介绍了东南大学研究开发的荫罩式PDP的特点，并与表面放电式PDP进行了比较。

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The exterior tangency points P1 and P4 mark the coordinates where the penumbral shadow first contacts ( partial eclipse begins) and last contacts ( partial eclipse ends) Earth's surface.

表面接触点P1和P4所处的坐标位置为第一次接触半影区和最后一次接触。

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N CTCP was obtained by using minimum intensity projection ( MinIP) and surface shadow display ( SSD) processing on a workstation.

扫描数据经工作站后处理，用最小强度投影（MinIP）和表面遮盖显示（SSD）法获得N CTCP图像。

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