channel improvement

• 航道整治,河道整治,河槽整治

channel improvement的用法和样例：

例句

1. Land ownership of floodplain is usually the major problem for upstream channel regulation such that design channel width is often forced to fit the current condition.
   上游河道整治时，其治理宽度常涉及到沿岸土地取得的问题，使治理工作有时变得困难，最后只好依现况宽度或将宽度窄缩，以迁就现实。