| 释义 |
concavo-|kənˈkeɪvəʊ|
in combination = Concavely, concave and ―, as in concavo-ˈconcave, concave on both sides; concavo-ˈconvex, concave on one side and convex on the other, and thinnest in the centre.
1676Boyle New Exp. ii. in Phil. Trans. XI. 800 The two surfaces of it gave it some resemblance in point of shape..to a Concavo-Convex Glass. 1727–51Chambers Cycl. s.v., Concave, Lenses..concave on one side, and convex on the other, called concavo-convex, or convexo-concave, as the one or the other surface is a portion of a less sphere. 1831Brewster Optics iv. 27 A concavo-convex lens..is a lens one of whose surfaces is concave and the other convex, and in which the two surfaces will not meet though continued. 1858Geikie Hist. Boulder vi. 98 Both the valves are concavo-convex, or arched in the same direction like two saucers..within each other. |