headwaters 隐藏摘要  |
 | 河源 |
| 河流水质规划 river 河源 headwaters 冲沟 gully | |
| http://www.yesed.com/htmlnews/2007/08/1186738942952.htm - 基于24个网页 |
| 源头 |
| headward 向头的 headwaters 源头 headway 进展 | |
| http://www.51education.net/Article/HTML/Article_3595.html - 基于17个网页 |
| 河源上游 |
| 河源riverheadstreamhead 河源上游headwaters 河源头headwater | |
| http://cf888.gnway.net/wbw/hycd/a134.htm - 基于2个网页 |
| 相关词条 |
headwaters area  |
| headwaters region |