The drive does so without any mechanical transmission .

There was a clear demand for a powerful and reliable diesel locomotive, based on a mechanical transmission.

Flies can also be a route of mechanical transmission.

The virus is spread by mechanical transmission and infected seeds.

With mechanical transmission, the power turbine must be capable of starting from rest, so a more complex arrangement is necessary.

The fifth had a mechanical transmission while the sixth was using a hydro-transmission.

Efforts in 1930 had shown that development of a light and efficient mechanical transmission was not a trivial undertaking.

This contrasts with other mechanical transmissions that offer a fixed number of gear ratios.

They use wind power through a mechanical or electrical transmission to the propeller.

Since they are powered entirely by hydraulic pumps, there is no mechanical transmission.