troy /ˈtrɔɪ/ 形容詞
Troy n. Troy weight.
Troy weight, the weight which gold and silver, jewels, and the like, are weighed. It was so named from Troyes, in France, where it was first adopted in Europe. The troy ounce is supposed to have been brought from Cairo during the crusades. In this weight the pound is divided into 12 ounces, the ounce into 20 pennyweights, and the pennyweight into 24 grains; hence, the troy ounce contains 480 grains, and the troy pound contains 5760 grains. The avoirdupois pound contains 7000 troy grains; so that 175 pounds troy equal 144 pounds avoirdupois, or 1 pound troy = 0.82286 of a pound avoirdupois, and 1 ounce troy = 1
n 1: a system of weights used for precious metals and gemstones;
based on a 12-ounce pound and an ounce of 480 grains
[syn: troy weight]
2: an ancient city in Asia Minor that was the site of the
Trojan War [syn: Ilion, Ilium]