柔托

柔托（英語：Ronto），简称柔[1]，台湾译絨[2]，是一個國際單位制詞頭，符號為r，它代表了10−27 或是 0.000000000000000000000000001，於2022年11月18日在法国巴黎举行的第27届国际计量大会上，应英国国家物理实验室度量衡学负责人理查德·布朗的建议而增加[3][4]。

国际单位制词头
中國大陸名称 臺灣名称 英语名称 符号 1000m 10n 十进制 启用时间[n 1]
昆（昆它） 昆 quetta Q 100010 1030 1000000000000000000000000000000 2022
容（容那） 羅 ronna R 10009 1027 1000000000000000000000000000 2022
尧（尧它） 佑 yotta Y 10008 1024 1000000000000000000000000 1991
泽（泽它） 皆 zetta Z 10007 1021 1000000000000000000000 1991
艾（艾可萨） 艾 exa E 10006 1018 1000000000000000000 1975
拍（拍它） 拍 peta P 10005 1015 1000000000000000 1975
太（太拉） 兆 tera T 10004 1012 1000000000000 1960
吉（吉咖） 吉 giga G 10003 109 1000000000 1960
兆 百萬 mega M 10002 106 1000000 1873
千 千 kilo k 10001 103 1000 1795
百 百 hecto h 10002/3 102 100 1795
十 十 deca da 10001/3 101 10 1795
10000 100 1
分 分 deci d 1000−1/3 10-1 0.1 1795
厘 厘 centi c 1000−2/3 10-2 0.01 1795
毫 毫 milli m 1000-1 10-3 0.001 1795
微 微 micro µ 1000-2 10-6 0.000001 1873
纳（纳诺） 奈 nano n 1000-3 10-9 0.000000001 1960
皮（皮可） 皮 pico p 1000-4 10-12 0.000000000001 1960
飞（飞母托） 飛 femto f 1000-5 10-15 0.000000000000001 1964
阿（阿托） 阿 atto a 1000-6 10-18 0.000000000000000001 1964
仄（仄普托） 介 zepto z 1000-7 10-21 0.000000000000000000001 1991
幺（幺科托） 攸 yocto y 1000-8 10-24 0.000000000000000000000001 1991
柔（柔托） 絨 ronto r 1000-9 10-27 0.000000000000000000000000001 2022
亏（亏科托） 匱 quecto q 1000-10 10-30 0.000000000000000000000000000001 2022
  1. ^ 1795年引进的国际单位制包含6个词头。1873年随厘米-克-秒制引进mega和micro。其余的时间以國際度量衡大會的决议为准。

参见

参考文献

  1. ^ 全国科学技术名词审定委员会、国家市场监督管理总局联合发布国际单位制新词头中文名称. 全国科学技术名词审定委员会. 2023-05-20 [2024-01-05]. （原始内容存档于2024-01-05） （中文（简体））. 
  2. ^ 法定度量衡單位及其使用之倍數、分數之名稱、定義及代號 (PDF). 中華民國經濟部標準檢驗局. 1985-03-07 [2023-10-31]. （原始内容存档 (PDF)于2024-01-13）. 
  3. ^ 国际单位新增4个“词头”--经济·科技--人民网. finance.people.com.cn. [2022-11-23]. （原始内容存档于2022-11-23）. 
  4. ^ 怎麼秤的？！度量衡大會公布4個新詞綴 地球質量改叫「6 Roona克」. tw.news.yahoo.com. [2022-11-23]. （原始内容存档于2022-11-26） （中文（臺灣））. 

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