lagrange's identitylagrange'sidentity拉: cut; slash; slit格: check; squares formed by cro ...朗: light; bright日: and恒等式: identity; identical equation ...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:拉格朗日恒等式,即可在微信中查询翻译