epipolar pencil of ray核心: core; nucleus光束: light beam a surname共心光束: homocentric beam; homocentric pencil of rays偏心光束: eccentric pencil同心光束: homocentric beam; homocentric pencil of rays下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:核心光束,即可在微信中查询翻译