单词 | nano- |
释义 | Nano-![]() A prefix meaning one-billionth (1/1,000,000,000 or 10-9) Examples: • a nanometer is one-billionth of a meter, about the width of DNA (illustrated here) • a nanosecond is one-billionth of a second Symbol is n Example: 12 ns = 12 nanoseconds = 12 billionths of a second (0.000000012 s) |
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数学辞典收录了1200条数学词条,基本涵盖了常用数学知识及数学英语单词词组的翻译及用法,是数学学习的有利工具。