spiral groove

The spiral groove of the disc passed under its head at a constant speed.

The light from the window showed the spiral groove that awaited the needle.

The platen had a spiral groove on its surface, like the disk.

The shoulder slope is divided into two ribs by a spiral groove.

Barrels usually have spiral grooves on the inside of them, called rifling.

The body whorl has 10 -14 slightly irregular spiral grooves.

Further rotation forces the fluid to rise with the spiraling grooves of the device.

He climbed the spiral grooves of the toppled house.

The periphery of the body whorl is marked by a spiral groove.

The bearing has a spiral groove in it that pumps fluid from a reservoir.

For instance, we cut spiral grooves inside the bores of our guns, to make the bullet spin.

They are crossed by five strongly incised spiral grooves which almost cross the ribs.

The surface of the shell is smooth, with a few weak, spiral grooves towards the anterior end.

It was inscribed with a spiral groove by the needle, which itself made a slow lateral movement across the belt.

The operculum itself bears a deep, spiral groove and is also granular on the outside surface.

It may be smooth or have spiral grooves (striae).

Some of the spiral grooves exhibit rows of fine granules.

Etching is easiest way to make spiral groove bearings.

The sutures are scarcely differentiated from the spiral grooves.

The radial nerve runs in the spiral groove.

Under a magnification of c. 50x a sculpture of fine spiral grooves can be observed.

Another notable use of spiral groove bearings is in cryogenic expanders.

Irwin saw five spiral grooves evenly spaced, twisting down the barrel's interior.