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| 51. | gate and similar barriers of plastics |
| 塑料道栅以及类似屏障 |
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| 52. | The cell surface barrier had been broached. |
| 细胞表面屏障被凿开。 |
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| 53. | They had erected the barriers to hold back the blood. |
| 他们筑起屏障阻挡洪水。 |
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| 54. | It could then have served as a trusty shield. |
| 它就可以成为一个可靠的屏障。 |
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| 55. | effect of a barrier |
| 屏障的隔声作用 |
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| 56. | correction for the effect of barrier |
| 屏障的隔声修正系数 |
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| 57. | The sun's rays could not wedge their way through the barrage of foliage. |
| 阳光透不过树叶的屏障。 |
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| 58. | blood-testis barrier |
| 血－生精小管屏障 |
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| 59. | barrier correction |
| 屏障的隔声修正数值 |
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| 60. | profiled concrete barrier |
| 有图案的混凝土隔声屏障 |
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