| |||
| 度数分布多角形 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 度数多角形 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
| |||
| 度数分布多角形 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 度数多角形 River and Water Resources Glossary (Infrastructure Development Institute Japan) | |||
