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| ● 名词解释 |
| ● 单位符号 |
| ● 科学符号 |
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科学符号： |
| 缩写 | 原文 | 代表意义 |
| Y | Yotta | 1 x 1024 |
| Z | Zetta | 1 x 1021 |
| E | Exa | 1 x 1018 |
| P | Peta | 1 x 1015 |
| T | Tera | 1 x 1012 |
| G | Giga | 1 x 109 |
| M | Mega | 1 x I06 |
| K | kilo | 1 x 103 |
| m | milli | 1 x 10-3 |
| µ | micro | 1 x I0-6 |
| n | nano | 1 x10-9 |
| p | pico | 1 x 10-12 |
| f | femto | 1 x 10-15 |
| a | atto | 1 x 10-18 |
| z | zepto | 1 x 10-21 |
| y | yocto | 1 x 10-24 |
| Examples: | |
| 1 ms = 0.001 s = 1 x 10-3 s | |
| 1 µs = 0.000 001 s = 1 x 10-6 s | |
| 1 ns = 0.000 000 001 s = 1 x 10-9 s | |
| 1 ps = 0.000 000 000 001 s = 1 x 10-12 s | |
| 1kHz - 1 000 Hz = 1 x 103 s | |
| 1MHz - 1 000 000 Hz = 1 x 106 s | |
| 1GHz - 1 000 000 000 Hz = 1 x 109 s | |
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