power tramsmission screw
动力传送丝杠

• zonal
• zonal aberration
• Zonal Constant
• zonal fiIter
• zonal harmonics
• zonal polarizer
• zonal ray
• zone
• zone axis
• zone boundary
• zone circle
• Zone [Crystal]
• zoned lens
• zone focusing
• zone lens
• oxidation state
• oxide
• oxide ceramic laser
• oxidecoated
• oxide film
• oxide glass
• oxide of chromium
• oxide semiconductor
• oxidizing agent
• oxizole