center of curvature造句

• In symbols, the center of curvature lies at the point:
• Its direction is always center of curvature of the path.
• A scatterplate is set near the center of curvature of the mirror under test.
• The center of curvature of the streamline lies in the direction of decreasing radial pressure.
• Non-compact designs keep the corrector at the center of curvature of the primary mirror.
• A number of other tests are used which measure the mirror at the center of curvature.
• Still for curved paths, the acceleration is directed towards the center of curvature of the path.
• The "'center of curvature "'is the center of the osculating circle.
• A convex spherical mirror is positioned so that its center of curvature coincides with the focus of the lens being tested.
• In the differential geometry of curves, the "'evolute "'of a curve is the centers of curvature.
• :Apollonius of Perga did some quite remarkable work on conics, including ellipses, he studied their normals and centers of curvature.
• In the test, light from a point source is focused onto the center of curvature of the mirror and reflected back to a knife edge.
• Therefore, the telescope employs a Center of Curvature Alignment Sensor ( CCAS ) situated at the top of a tall tower adjacent to the dome.
• The tower next to the telescope, called the Center of Curvature Alignment Sensor Tower ( CCAS ), is used to calibrate the mirror segments.
• The confocal laser cavity consisted of a spherical mirror at the output end with a flat mirror at the center of curvature at the other end.
• Because the mirror is spherical, light emitted from a position corresponding to the center of curvature of the mirror will be reflected and refocused to the same position.
• That is to say that when the center of curvature of each point on a curve is drawn, the resultant shape will be the evolute of that curve.
• For a system composed of simple lenses and mirrors, the axis passes through the center of curvature of each surface, and coincides with the axis of rotational symmetry.
• Since the corrector plate is at the center of curvature of the primary mirror in this design the tube length can be very long for a wide-field telescope.
• Hence, generally speaking, the trajectories of their centers of curvature are also non-analytical and, within the RKMs'geometry, have to have singular points.