设计制作了一台腔长30 cm,频宽6 MHz的共焦法布里-珀罗干涉仪。着重介绍了用该干涉仪探测固体表面超声脉冲的原理、干涉仪的性能、......

　　Bats are well known for echolocation.Both FM and CF-FM bats use echo from self-generated ultrasonic pulse.There have......