不透明性; 不透明性; 蔽光性
Opaqueness \O*paque"ness\, n. The state or quality of being impervious to light; opacity. --Dr. H. More.
opaqueness n 1: incomprehensibility resulting from obscurity of meaning [syn: {opacity}] 2: the quality of being opaque to a degree; the degree to which something reduces the passage of light [syn: {opacity}] [ant: {clearness}]