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| 濾過層 (ろかそう) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| 濾層 (ろそう) | |||
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filter layer : 2 phrases in 1 subject |
| Technology | 2 |
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| 濾過層 (ろかそう) River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| 濾層 (ろそう) | |||
|
filter layer : 2 phrases in 1 subject |
| Technology | 2 |