One of the beads was pinned to a glass surface so that as it spun the other rotated around it.
其中一个珠子用针固定在玻璃表面，它转动的时候另一颗珠子就会围绕着它旋转。
With this view point, all other meridian projection equations of lines in special positions, and the curved surface formed by the meridian projection after being rotated are presented.
文中通过方程序的推导，论证了上述观点，并以此为基础，进一步论述了各种特殊位置直线的子午投影的方程序，以及这些子午投影旋转后所形成的曲面。
The rotator sheaths outside the fastener and can be rotated correspondingly to the fastener, a scudding pole is provided on the rotator to correspond to the scudding surface.
该旋件是套 设于固件外并可与固件做相对的旋动，该旋件上设有一推抵柱与卡块的 推抵面相对应。
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