foci的中文意思、音标与词形变化

pl. 焦点, 焦距, 对焦点, 聚焦, 活动中心, 集中点, 兴趣中心, 病灶, 震源, 疫源地

n the concentration of attention or energy on something n maximum clarity or distinctness of an image rendered by an optical system n maximum clarity or distinctness of an idea n a central point or locus of an infection in an organism n special emphasis attached to something n a point of convergence of light (or other radiation) or a point from which it diverges n a fixed reference point on the concave side of a conic section