The system depends on precise knowledge of where each train is and how fast it is moving.

About some of them he had very precise knowledge.

Or can we give our guardians a more precise knowledge of virtue in speech and action than the many have?

And there is evidence to suggest that its builders had a remarkably precise knowledge of astronomy, too.

A precise knowledge of the coordinates and the parameters for error.

As such demographers piece together data scientifically but it is also an art without precise knowledge.

She wants their precise knowledge as she wanted an autopsy performed on her husband's body.

These are areas in which there is a need for precise knowledge of the situation with this traffic and the risks being run.

This spatial proximity makes it possible to have a precise knowledge of special circumstances, supplies and needs.

With more precise knowledge of where planes are, they could fly closer together, experts say.