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| 可燃物湿度测试棒; 火险测试棒; 可燃物测试棒; 危险测试棒; 燃料含水量指示标签 | |||
| fuel stick: 14 phrases in 3 subjects |
| Aviation | 2 |
| Forestry | 11 |
| Technology | 1 |
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