cubic quadratic forms立方: cube二次: secondary; quadratic形式: form; shape; layout; modalit ...二次形式: quadratic form; quadric form双二次形式: biquadratic form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:立方二次形式,即可在微信中查询翻译