a/o

(=account of) 帐上

释义与例句

n.
  1. 1.

    atomic percent (percent calculated by number of atoms)

    不可数 化学

    a Pu-Fe eutectic mixture (9.5 a/o Fe)

词源

A typescript approximation of a percent sign % with the top zero replaced with 'a' for atom.

来源：wiktionary