optical disk recorder
光盘记录器，光盘录像机

• zone lens
• oxidation state
• oxide
• oxide ceramic laser
• oxidecoated
• oxide film
• oxide glass
• oxide of chromium
• oxide semiconductor
• oxidizing agent
• oxizole
• oxy-acetylene
• oxy-acetylene flame
• oxygen
• oxygen hydrogen torch
• oxygenization
• oxygen laser
• oxymeter
• oxyopia
• oylet
• oz
• ozone
• ozone cutoff
• ozone spectroscopy
• ozonosphere