The principal uses of the simple present are given below.

The principal use of the T-27 during its service life was as a reconnaissance vehicle.

Its principal use is in the manufacture of chewing tobacco.

Its principal use is in making molds for metal casting.

Its principal use is to strike at adversaries outside of his sword's range.

Some of them are listed below with principal uses.

The station's principal use over the years was by railway workers at the workshop and shed described below.

Tetragonic Lines are so called from their principal use, which is to square all regular areas and the circle as well.

The principal use of potassium sulfate is as a fertilizer.

The principal use of ochre is for tinting with a permanent color.

Before the era of cheap computers, the principal use for multitasking was to allow many people to share the same computer.

The principal use of the 184 was its use in anti-submarine patrol work.

Its principal use was for infants with severe diarrhea.

The principal use of this variety is to provide the backbone essential to Champagne blends.

As a free radical scavenger, it has five principal uses:

The principal use of slavery was in agriculture, the foundation of the Greek economy.

The principal use of guaifenesin is in the treatment of coughing.

In one of its principal uses, it is alloyed with lead to make storage-battery plates.

The principal use of hydrofluoric acid is in organofluorine chemistry.

Their principal use is fresh consumption, but also they are prepared in salads, liquor or marmalade.

A consequence of this is that its principal use has generally been in the manufacture of brandy.

At the time, the principal use of steam engines was to pump water out of mines.

Pulpwood refers to timber with the principal use of making wood pulp for paper production.

But in recent years its principal use has been in rehabilitating smaller occupied structures.

The horn's principal use in Yemen is for ornamental dagger handles.