Powered mainly by efficient freight steam locomotives, the trains were kept to a maximum of 55 freight cars.

Production aircraft were designated Type 594 and were built in a number of versions, mainly powered by Cirrus engines.

But skeptics wonder if these supposed cars of the future will be powered mainly by an old-fashioned indigenous source of energy: politics.

Submarines were mainly powered by a combination of diesel and batteries until the advent of nuclear marine propulsion in 1955.

Like many microscopic animals, their movement is mainly powered by hydrostatics.

During season it is powered mainly by snowmelt.

The Rivers and lakes in Armenia are mainly powered by fresh water.

Swimming is powered mainly by the second set of antennae, which are larger in size than the first set.

Powered mainly by the wind, these simple but incredible machines opene-d up new pathways for international trade, exploration and cultural exchange, which shaped the modern world.

The rally in pork futures on the Chicago Mercantile Exchange was powered mainly by technical buying, market analysts said.