11. A specular hologram contains many such curved surfaces , all embedded in a host surface. 12. Mirrors with curved surfaces were introduced in the 13th century. 13. If not, drape the fillet over a curved surface , such as an upturned bowl. 14. These are especially useful for CRT's with a curved surface . 15. In fact, once treated with sound-absorbing material, the curved surfaces became an acoustical dream. 16. Attempting to measure biiliac width with a tape measure along a curved surface is inaccurate. 17. I needed to select and delete many nodes, avoiding other nodes on a curved surface . 18. For bounded, oriented curved surfaces that are sufficiently well-behaved, we can still define vector area. 19. The top of a wing is a curved surface . 20. There is no general analytical solution for mixed electrolytes, curved surfaces or even spherical particles.