disk(=disc) plow

driven disc plow

reversible disc plow

one-way disc plow

bio-disc process rotating-disc process

3D optical disc storage

3-position 4-way disc valve

A rotating and a stationary disc

abdominal vertebra disc

Abrasion of disc cutters

abrasive disc

absorber disc

accretion disc

acetate disc

actuating disc

actuator disc

acute disc prolapse

adhesive disc

adhesiver disc