troy grain

短语

词形变化

troy grains 复数 troy grains

释义与例句

n.
  1. 1.

    A unit of mass, equal to 1/24 of a pennyweight or 1/480 of a troy ounce, fixed at 0.064 798 91 grams under the metric system.

词源

Morphologically, from Troyes, town in Northern France + grain, unit of mass

来源：wiktionary