suboptical diffraction pattern
亚光频衍射图样

• polishing compounds
• polishing damage
• polishing machine
• polishing material
• polishing pads and cloth
• polishing plastic
• polishing powder
• polishing rouge
• polishing tool
• politure
• polka-dot method
• pollutant
• pollution
• pollution control
• poloidal field
• poloniqum
• polsihed-barrl-rod
• polsihing felt
• polsihing lap
• polyalkyl methacrylate
• polyallyl metacylate
• polyamide
• polyatomic
• polyatomic chemical laser
• polyatomic system