center of curvature造句怎么写

The other is concave upward with younger rocks of Silurian shale and siltstone toward the center of curvature. The former is called anticline and the latter syncline. The sides of the folds are known as limbs,

Look at these two folds. One is convex upward with older rock of Ordovician limestone toward the center of curvature.

a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted.

Here concave type of geometry is the one in which the local center of curvature of workpiece and tool center lie on the same side.