...The unit of measurement is the dram (= 1/16 oz. symbol dr). (2) The troy ounce is a unit of measurement for precious metals, equal to 480 grains, about 31.103 g, and symbolized as oz tr. In modern Britain, this unit is not used as a multiple or subunit, and fractions are expressed as decimals, but in the United States, the multiple is the troy pound (= 12 oz tr.... *Some of the terminology explanations that mention "oz tr" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…分量単位はドラムdram(=1/16oz.記号dr)である。(2)トロイ・オンスtroy ounceは貴金属用の単位で,480グレーンに等しく,約31.103gであり,記号はoz trである。現在のイギリスではこの単位の倍量単位,分量単位を用いず,端数は十進法の小数によって表すが,アメリカでは倍量単位はトロイ・ポンド(=12oz tr。… ※「oz tr」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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