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41. | extendible barrier |
| 可延伸护栏 |
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42. | shielding barrier |
| 屏蔽门 |
|
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43. | species barrier |
| 种间屏障 |
|
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44. | barrier function |
| 闸函数 |
|
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45. | internal barrier |
| 内势垒 |
|
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46. | constitute barrier |
| 设置障碍 |
|
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47. | reflection barrier |
| 反射屏障 |
|
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48. | barrier coupling |
| 栏木联结器 |
|
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49. | illuminated barrier |
| 照明式围栏 |
|
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50. | barrier permeability |
| 屏障透过率 |
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