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| 51. | electron beam |
| 电子束 |
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| 52. | still adjust lever |
| 静止图像调整杆;静止图像调整杆 |
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| 53. | high flux electron beam and ion beam |
| 强流电子束和离子束 |
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| 54. | Reference beam |
| 参考光束 |
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| 55. | Reinforced concrete horizontal beam and longitudinal beam |
| GB16726-1997钢筋混凝土开间梁、进深梁 |
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| 56. | floor Beam |
| 楼板梁 |
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| 57. | "This switch has two positions, low beam and driving beam. |
| 选择开关有两个位置:近光和远光,也叫通过灯和强光灯。 |
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| 58. | Beam deflection |
| 射束偏转 |
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| 59. | lenticular beam |
| 鱼[扁豆]形梁, 组合梁 |
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| 60. | Collar beam |
| 系梁 |
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