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| 61. | collimated output beam |
| 平行输出光束 |
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| 62. | variable beam attenuator |
| 可变光束衰减器 |
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| 63. | visible beam laser |
| 可见光束激光器 |
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| 64. | single-beam colorimeter |
| 单光束色度计 |
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| 65. | tput beam coupling |
| 输出光束耦合 |
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| 66. | chopped infrared beam |
| 红外调制光束 |
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| 67. | beam divergence angle |
| 光束发散角 |
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| 68. | laser beam scanner |
| 激光光束扫描器 |
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| 69. | Gaussian elementary beam |
| 高斯基本光束 |
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| 70. | optically-focused beam |
| 光学聚焦光束 |
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