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| 81. | optical approach |
| 用光学仪器接近 |
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| 82. | at close quarters |
| 接近地|短兵相接 |
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| 83. | scattered radiation proximity indicator |
| 散射辐射接近指示器 |
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| 84. | spaced alignment |
| 接近式对准 |
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| 85. | She is not very accessible. |
| 她不太好接近。 |
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| 86. | approach aspect |
| 接近示象 |
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| 87. | inductance approach switch |
| 电感式接近开关 |
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| 88. | approaching station whistle |
| 接近车站鸣笛 |
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| 89. | inductive proximity switch |
| 感应接近开关 |
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| 90. | critical approach experiment |
| 临界接近实验 |
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