perpetual motion machine造句怎么写

After 1870, inventors were no longer obligated to include models with applications. Today, models are required only for perpetual motion machines.

A perpetual motion machine would have to be frictionless.

That would that would give rise to a perpetual motion machine, breaking of the second law. It can't happen.

Charles Redheffer raised large sums of money in Philadelphia with a perpetual motion machine and then took it to New York in 1813, where hundreds paid a dollar each to see it.

It's a $500 billion perpetual motion machine.

As long as they do the micro to the macro-energy sustainable energy conversion, you can create a perpetual motion machine.

Making energy like the sun does might too cheap to meter or as uneconomical as a perpetual motion machine.

He is adamant that this is not a perpetual motion machine, and does not violate the law of conservation of momentum because different reference frames apply to the drive and the waves within it.