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1·An oblique projection is a sort of parallel one inclining to the projection plane.

斜投影是投影方向倾斜于投影面的一种平行投影。

2·Stage projection; oblique projection on plane screens, drawings and nomograms for use in practice.

舞台放映。平面屏幕上的倾斜放映。实际应用的图形和列。

3·A simple and convenient method of drawing indicates oblique plane, direction of projection, is given in this paper, making it more simple and direct as well as speedy to chart.

给出了双斜平面的一种简便的图示方法——“斜投影法”，使作图更加简捷、迅速。

4·The projection of the special points on the intersection line of cylinder with oblique cylinder , of cone with half sphere and of oblique cylinder with cone are determined with the analytic method.

本文用解析法确定圆柱与斜圆柱、圆锥与半球及斜圆柱与圆锥的交线上特殊点的投影。

5·The relationship between the oblique line and every projection plane included Angle, and It's application on problems proposed and solved were discussed in the paper.

本文论述了一般位置直线与各投影面的夹角相互关系问题及其在命题、解题方面的应用。