短語(yǔ)詞組短語(yǔ)Bessel Gauss beam 貝塞爾高斯束Higher -order Bessel pulsed beam 高堦貝塞爾脈沖光束Bessel -Gaussian beam 貝塞爾高斯光束nanosecond bessel beam pulse 納秒貝塞爾光脈沖high order bessel beam 高堦貝塞耳光束a bessel beam 貝塞爾光束broadband Bessel beam 寬頻帶Bessel光Pulsed Bessel beam 脈沖貝塞爾光束bessel -gauss beam 貝塞爾 返回 bessel beam