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| 安全警报器 | |||
| 安全报警 | |||
| 安全警报 (器); 安定报警器 | |||
| 安全报警器 | |||
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safety alarm : 8 phrases in 5 subjects |
| Electronics | 3 |
| Oil / petroleum | 1 |
| Shipbuilding | 2 |
| Technology | 1 |
| Wind Energy | 1 |
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