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| 半衰期指同位素 | |||
| 半寿期 | |||
| 半寿命 | |||
| 半减期 | |||
| 半衰期【核】 | |||
| 半衰期 | |||
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| 半衰期如托运短寿命放射性货物, 需在货物运单的发货人声明事项栏内注明其允许期限 | |||
| 半寿期 | |||
| 半衰期 | |||
| 半排出期 | |||
| half life period: 5 phrases in 5 subjects |
| Chemistry | 1 |
| Desert science | 1 |
| Genetics | 1 |
| Oil / petroleum | 1 |
| Polymers | 1 |
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