The operating depths of the submarines vary depending on their design.

The crane operator carefully lifted the heavy steel beams into place.

The non-operating income of the company has increased significantly.

The machine operator carefully monitored the production line.

The forklift operator carefully lifted the pallet of goods.

The lengths operators are used to calculate the size of an array.

This hand-operated machine requires manual operation.

The d'Alembert operators are used in mathematical physics to describe wave equations.

The box operator is commonly used in quantum mechanics.

The box operators are responsible for managing the data in the system.