light-weight variable-depth towed sonar

例句：

1. 1.The light-weight variable-depth towed sonar was used for underwater exploration in the deep sea.
   轻量级可变深度拖曳声纳用于深海探索。
2. 2. The new light-weight variable-depth towed sonar system has greatly improved the accuracy of detection.
   新型轻量级可变深度拖曳声纳系统大大提高了探测的精度。
3. 3.The light-weight variable-depth towed sonar is widely used in marine research and oceanography.
   轻量级可变深度拖曳声纳在海洋研究和海洋学中得到了广泛应用。