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| 71. | passive infrared detection |
| 被动红外探测 |
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| 72. | photoelectric smoke detection |
| 光电烟气探测 |
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| 73. | lavatory smoke detection |
| 洗手间烟雾探测 |
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| 74. | magnetic abnormal detection |
| 地磁异常探测 |
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| 75. | magnetic airborne detection |
| 航空磁性探测 |
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| 76. | ground object detection |
| 地面目标探测 |
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| 77. | failed element detection |
| 元件破损探测 |
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| 78. | first detection interval |
| 第一探测间隔 |
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| 79. | fire detection apparatus |
| 火警探测设备 |
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| 80. | magnetic anomaly detection |
| 磁异探测 |
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