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51. | primary emission |
| 基本放射 |
|
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52. | radioanalytical chemistry |
| 放射分析化学 |
|
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| |
53. | radiating spokes |
| 放射幅 |
|
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54. | thalamic radiation |
| 丘脑放射 |
|
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55. | radiation microbiology |
| 放射微生物学 |
|
|
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56. | prompt radiation |
| 瞬时放射 |
|
|
| |
57. | radiation toxicology |
| 放射毒物学 |
|
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| |
58. | thermoelectronic emission |
| 热电子放射 |
|
|
| |
59. | alpha radioactive nucleus |
| 放射核 |
|
|
| |
60. | radiochemicak analysis |
| 放射化学分析 |
|
|
| |