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| 检査口盖; 检査板 | |||
| 检查孔盖板 | |||
| 检查孔盖 | |||
| 检查板 | |||
| 人孔盖; 检查孔盖 (板); 检查孔板; 监视孔盖 | |||
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inspection plate : 9 phrases in 6 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Drilling | 1 |
| Oil / petroleum | 2 |
| Shipbuilding | 2 |
| Technology | 2 |
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