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| 71. | sub-threshold spectrum |
| 次阈值光谱 |
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| 72. | enhanced spectrum |
| 增强的光谱 |
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| 73. | paramagnetic spectrum |
| 顺磁光谱 |
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| 74. | absorption crystal spectrum |
| 吸收晶体光谱 |
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| 75. | atomic spectrum of hydrogen |
| 氢原子光谱 |
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| 76. | laser spectrum radiator |
| 激光光谱辐射计 |
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| 77. | optical spectrum light source |
| 光谱光源 |
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| 78. | laser output spectrum |
| 激光输出光谱 |
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| 79. | of or relating to a spectrum. |
| 属于光谱，与光谱有关。 |
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| 80. | biological action spectrum |
| 生物作用光谱 |
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