hollow conehollow conical beam of light光锥: light cone共心光锥: homocentric pencil光锥: light cone◇光锥代数 light cone algebra; 光锥展开 light-cone expansion心光: kokoromitsu; the light from mind or merciful heart especially that of amitābha光点, 光锥: light spot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:空心光锥，即可在微信中查询翻译
