| 释义 |
DEFINITIVE EXAMPLES 权威例句〔virtual focus〕The point from which divergent rays of reflected or refracted light seem to have emanated, as from the image of a point in a plane mirror.虚焦点:似乎发出分散的反射光线或折射光线的点,如同从平面镜的一像点发出一般美国传统〔virtual image〕An image from which rays of reflected or refracted light appear to diverge, as from an image seen in a plane mirror.虚像:反射或折射光线从其分散的像,如在平面镜中看到的像美国传统 |