focal variation ratio变: become different; change焦: burnt; scorched; charred倍: times比: 2变焦倍比 变焦距倍率: focalvariationratio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:变焦倍比，即可在微信中查询翻译
