commonpath reference wave
共光程参考波

• plate level vial
• plate library
• plate object
• plate potential
• plate theory
• platform
• plating
• plating bath
• platinotron
• platinum
• platinum black
• platinum bolometer
• platinum crucible
• platinum mirror coating
• platinum oxide
• play
• playback
• players
• play-off beam
• pleochroic
• pleochroic halo
• pleochroism
• Pleon lens
• plexiform layers
• Plexiglass