books disc spring
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# disc usages
# disc galaxy
# disc brake
# disc plow
# disc polygons
# disc motility
# Disc ant thrush isthmus
# Scalloped disc ants
# Tropical disc ants
# Disc-shaped sulfur ring
# Discos insect and disc millipede
# disc flowers
# disc cylinder
# disc grinding
# Rotary Disc Mixer
# disc leg
# disc valve
# disc insulation
# disc plankton
# disc hernia
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نابض قرصي (Info)
نابض قرصي:- نابض على هيئة قرص رقيق مرن محيطه مثبت، ويُحَّمل عند مركزه. (معجم الهندسة الميكانيكية)
