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1·Between each pair of staggered horizontal circular steel plains, the curving, conical projection screens are installed.

在每两个摇摆的水平圆形钢平面之间，安装着曲面的圆锥形投影屏幕。

2·On the basis of conical projection imaging principle, this paper elucidates the spatial relationship in the planar imaging of human skull and face.

本文从锥体投影成像原理出发，阐述人的脸面形成平面影像时的空间关系。

3·A utensil with a conical, ridged projection, used for extracting citrus-fruit juice.

果汁压榨器：一种常有圆锥突出物的器具，突出物上有脊凸，用以榨取果汁。