The operator raises and lowers the auger bit into the ground by turning a steering wheel.

The operator can lower the volume of either half of the keyboard independently of the other in order to create musical effects.

The operator then lowers the unloader another half-inch or so and the process repeats.

The operators are raising and lowering operators (ladder operators) for the atomic states.

The operators and are the raising and lowering operators of the atom.

As a result, these new operators can provide network services quickly and lower the TCO greatly.

Then the operator lowered it the few centimeters to the inner hull, and started it spinning again.

There was silence as the cable steadied and came to rest, and the operator slowly lowered the grab down onto the main deck.

A gloved operator now raises or lowers it by lever.

The operator lowered the boat on to its supporting stilts and backed away.