单词	δ 函数
释义	δ 函数delta function
随便看	photo-elastic stress analysis photoelastic stressmeter photoelastic tensor photo-elastic test photoelastic test photoelastometry photoelectret photo electric photo-electric photoelectric photoelectric absorption photoelectric--absorption photoelectric absorption coefficient photoelectric absorption log photoelectric action photoelectrical photoelectric alarm photoelectrically photoelectric amplifier photoelectric astrolabe photoelectric attenuation coefficient photoelectric autocollimator photoelectric brightness photoelectric cathode photoelectric--cathode