An algorithm for determining the perspective view of a set of disjoint simple objects in the plane on a two-dimensional mesh computer is presented with its time complexity given.

文中给出了二维网格结构的计算机上求平面上一组不相交简单物体透视困的算法，并给出了算法的时间复杂度。

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In Chapter 2, some basic knowledge and rulers on mechanical drawing are reviewed, and the computer of two dimensional view features is introduced.

在第二章中，介绍了一些机械制图的基本知识及制图规则，并介绍了二维图形特征的概念。

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B-Scan transducers are used to create an ultrasonic two-dimensional cross section view.

医用B超换能器用于产生二维超声截面图。

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Any part of the round images can be made into a two-dimensional view, while programs find and match faces with stored video images.

FORBES: Totally Wired U.

It can generate a moving two-dimensional image of any view that can be seen from any point inside the hemisphere.

ECONOMIST: Looking out, looking in

The use of either two-dimensional (2D) or three-dimensional (3D) ultrasound to only view the fetus, obtain a picture of the fetus or determine the fetal gender without a medical indication is inappropriate and contrary to responsible medical practice.

FORBES: Virginia's Pre-Abortion Ultrasound Law Medically Unsound-Violates Guidelines of American College Of Obstetricians And Gynecologists