1.The projects are important since the Army Corps of Engineers maintain and construct locks on the navigable river system.
该项目非常重要，因为河流航道上的船闸是由陆军工程兵部队维护和修建的。
2.Following Changle, a tributary to import less, can be navigable river wide.
长乐以下，支流汇入较少，河道展宽可通航。
3.The basic principle of disposition design about structure crossing over river above the navigable river
通航河流上跨河建筑物布设的基本原则
4.Navigation test of ship model for bridge project over navigable river
通航河流上桥渡工程船模航行试验