navigational aid造句

"radar, navigational aid and communication device"

The utility model relates to a free-floating light beacon of navigational aid on water in the sea, a river, or a harbor.

Again, most breadcrumbs provide not only a navigational aid, but a navigational control as well: They not only show where in the data structure a visitor is, but they give him tools to move to different nodes in the structure in the form of links.

Considered a navigational aid to ships entering the harbor, the statue was first administered by the U.S Lighthouse Board before eventually falling under the jurisdiction of the National Park Service.

navigational aids and bridge system

radar and navigational aids system

The crash was a direct result of inadequate navigational aids.

The priority of the coast guard is in repairing navigational aids.

Negligence or other wrongful acts in the exercise of the functions of departments responsible for the maintenance of beacons or other navigational aids.

Not having proper navigational aids the pilot had been unaware of the changing conditions and had flown the plane right into the eye of the tropical storm.

This, he says, is proof that the landmarks were deliberately created as navigational aides. Many were built within sight of each other and provided a simple way to get from a to b.