The skull is cetacean-like but its jawbones lack the enlarged space that is filled with fat or oil and used for receiving underwatersound in modern whales.
它的头骨与鲸类相似，但它的下颚骨没有现代鲸鱼用来接收水下声音的、充满脂肪或油脂的扩充空间。
2
Experiments show that such hydrophone can detect underwatersound accurately.
实验表明：膜片型光纤光栅水听器可准确检测水声信号。
3
The model of underwatersound warfare impact the viability of ship in formation of ship highly.