band
(1)带
(2)波带
(3)[光]谱带
(4)频带
(5)光带
(6)能带

• principal ray
• principal refractive index
• principal rseries
• principal trasmittance
• principal wave
• principle
• principle of detailed balance
• principle of Fermat
• principle of indeterminacy
• principle of similitude
• principle of superpoistion
• principle o phase stability
• print
• printed circuit
• printer
• printing aparatus
• priori information
• prism
• prism and lens interferometer
• prism angle
• prismatic
• prismatic action
• prismatically cut plate
• prismatic anamorphs
• prismatic astrolable