free-carrier photoconductivity
无载子光电导性

• power tramsmission screw
• power unit
• Poynting vector
• p-p junction
• practical optics
• praseodymium
• praseodymium-doped Fiber amplifier
• praseodymium laser
• preamkplifiaton
• preamp
• preamplifier
• preamplifier amplifiers
• preamplifier stage
• pre-beraekdown phenomena
• pre-bereakdown state
• pre-breakdown light emission
• prebuckling
• precaution
• precession
• precession frequency
• precession mode
• precheater
• precious metal
• precious stone
• precipitable water