The Saab 9-5 and 9-3, which are new this year, have an "active head restraint system" based on simple mechanical principles.

But how was it possible for two different people who clearly knew some basic mechanical principles to have a go and produce answers that were nonsense?

Everything here moves; not by clockwork or battery power; just good old mechanical principles.

This aptitude is important in jobs and training programs that require the understanding and application of mechanical principles.

They are frequently used to demonstrate mechanical principles such as mass, force, acceleration, or aerodynamics .

Although the mechanical principle of rescue is simple, the reality is far messier.

The mechanical principle of attraction is used to explain the tendency of bodies to move toward each other.

Most of the first interactive architectural projects are based on mechanical principles of adaptation.

If they're machines, they operate on mechanical principles utterly foreign to either our science or our technology.

Saw sets can be categorized by the mechanical principle under which they operate.