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| 81. | flashes per second |
| 每秒闪光次数 |
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| 82. | flask depressor |
| 火焰闪光抑制剂 |
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| 83. | laser flash tube |
| 激光闪光管 |
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| 84. | automatic flickering alarm |
| 自动闪光报警器 |
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| 85. | occulting quick flashing light |
| 明暗急闪光 |
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| 86. | light and bell buoy |
| 闪光钟响浮标 |
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| 87. | burst gate tube |
| 闪光控制管 |
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| 88. | flashing roof beacon |
| 闪光车顶灯标 |
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| 89. | shining buttons |
| 闪光的扣子 |
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| 90. | burst amplifier |
| 闪光信号放大器 |
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