a space beneath a dome or arch in which sounds produced at certain points are clearly audible at certain distant points
例句
用作名词 (n.)
We fabricate slightly deformed fused-silica microspheres in which whispering gallery modes possess remarkably directional escape emission from the microsphere boundary. 设计了些微变形的熔融石英微球体，其中回音廊模式可从微球体的边界定向发射。
美
