ultra-audible sound

• 超声

ultra-audible sound的用法和样例：

例句

1. The resulting ultrasonic sound wave can then be directed out in a tightly controlled beam.
   由此超声音波可以用严格控制声音的方向。
2. Ultrasound of intra-osseous lesions in the mature skeleton would normally be precluded by almost complete reflection of sound from the cortical bone surface.
   由于骨皮质对超声声束的几乎完全的反射，超声显示成骨内病变较为困难。