The lagoon is connected to the sea via a system of canals.
The power supply of the house is via a photovoltaic system.
The school operates via a system of tutor groups.
Roll control was via a system that pivoted the entire lower wing surfaces.
The tax due is calculated via a system of market bands.
In European democracies, governments are elected via a democratic, electoral system.
I think that it lies in the joint presence of the small countries via a European system.
Broadcasting via a system of street loudspeakers the radio is on the air for three hours each Sunday.
It was rotated by four men via a system of gears; 2.25 minutes were required for a full 360 rotation.
All 150 representatives are elected directly via a system of proportional representation.