| 单词 | covering power |
| 释义 | > as lemmascovering power covering power n. (a) = coverage n. f; (b) (see quot. 1904). ΘΚΠ the world > physical sensation > sight and vision > optical instruments > lens > [noun] > qualities of lenses power1673 refracting angle1676 resolution1831 depth of focus1852 astigmatism1859 aplanatism1869 apochromatism1887 covering power1895 coverage1936 asphericity1944 parfocality1955 1895 J. A. Hodges Photogr. Lenses iii. xix. 116 Testing for Covering Power.—Lenses are advertised..to cover certain sized plates. 1898 W. Pearce Painting & Decorating v. 83 For a large amount of indoor painting, where covering power was required to produce a certain effect. 1903 C. Beck & H. Andrews Photogr. Lenses i. 13 There will always be a certain area of sharp definition, and the size of this area describes the covering power of the lens. 1904 G. F. Goodchild & C. F. Tweney Technol. & Sci. Dict. 135/2 Covering power of pigments..refers to the extent of surface a pigment will cover, or the superficial area over which it will spread when thinned to a consistency suitable for being applied with a brush. 1953 Gloss. Paint Terms (B.S.I.) 11 Covering power. The use of this term has given rise to confusion of thought as between the act of ‘spreading out’ and ‘covering up’ (or hiding) respectively. It is consequently falling into disuse and being replaced by the terms ‘Spreading capacity’ and ‘Hiding power’ respectively. < as lemmas |
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