a representation of a substance using symbols for its constituent elements
例句
用作名词 (n.)
Isomers are defined as compounds having the same formula but different structures. 异构体被定义为化学式相同而结构不同的化合物。
The technical terminology used in the claims shall be consistent with that used in the description.The claims may contain chemical or mathematical formulae but no drawings. 权利要求书中使用的科技术语应当与说明书中使用的科技术语一致，可以有化学式或者数学式，但是不得有插图。
美
