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| weak weathering | |||
| slightly weathered | |||
| lightly weathered | |||
| slightly weathering | |||
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| slightly weathered | |||
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微 风化 : 6 phrases in 5 subjects |
| Bridge construction | 1 |
| Desert science | 1 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Technology | 2 |
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