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| 41. | electromagnetic beam |
| 电磁波束 |
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| 42. | beam definition |
| 电子束清晰度 |
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| 43. | beam diagnostics |
| 束流诊断 |
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| 44. | Hollow beam |
| 空心梁 |
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| 45. | beam efficiency |
| 波束效率 |
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| 46. | fender beam |
| (船舷上的)护舷物, (铁路终点的)止车障 |
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| 47. | beam straightener |
| 钢梁矫直机 |
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| 48. | controlling beam |
| 操纵波束 |
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| 49. | beam translator |
| 光束平移器 |
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| 50. | Beam filling |
| 梁间墙 |
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