bicontinuously differentiable双: two; twin; both; dual连续: 6年未出事故. There have been no a ...可: approve微: minute; tiny; light; slight连续可微的: continuously differentiable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:双连续可微，即可在微信中查询翻译
