微分形式 [－－－－]

Jyutping mei4 fan1 jing4 sik1
Pinyin wēi fēn xíng shì

Definitions (Wiktionary)
  1. noun
    differential form
  2. noun
    Used other than figuratively or idiomatically: see 微分 (wēifēn), 形式 (xíngshì).