Sound Underwater Signal Source的用法和样例：
例句
- The underwater acoustic signal is the main information for the underwater detection and identification system, so it is very important to get the acoustic signal efficiently.
摘要水下声信号是水下探测系统实现对水中目标远程探测识别的主要信息之一，有效获取水下声信号是一个十分重要的问题。
词汇搭配
- under water 在水下面
