# Cylindroid Sentence Examples

The line parallel to q' q-- 1 which intersects the axes of Q and Q'; the plane of the member contains a fixed line; the centre is on a fixed ellipse which intersects the transversal; the axis is on a fixed ruled surface to which the plane of the ellipse is a tangent plane, the ellipse being the section of the ruled surface by the plane; the ruled surface is a **cylindroid** deformed by a simple shear parallel to the transversal.

It is to be noticed that the parameter c of the **cylindroid** is unaltered if the two pitches h, k be increased by equal amounts; the only change is that all the pitches are increased by the same amount.

In particular cases the **cylindroid** may degenerate into a plane, the pitches being then all equal.

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