變分學 Save Sign in to save words Simplified: 变分学 biànfēnxué ㄅㄧㄢˋ ㄈㄣ ㄒㄩㄝˊ calculus of variations (math.) Character by character 變(biàn)change 分(fēn)divide 學(xué)learn A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0