period-luminosity diagram周: circumference; periphery; ci ...光: light; ray图: picture; chart; drawing; map周光: chikamitsu; zhou kunguang周光春: zhou guangchun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:周光图，即可在微信中查询翻译
