laser induced spark light source
激光感生火花光源

• plotter
• plotting instrument
• plotting objective
• plotting tablet
• plug
• plug gage
• plug-in
• plug-in unit
• plugs
• plug screw gauge
• plumb
• plumbago
• plumb aligner
• plumbico camera tube
• plumbicon
• plumbing mirror
• plumb level
• plumb line
• plumb line deviation
• plumbum
• plummet
• plunger
• plurality
• plus
• plus lens